GMAT Question of the Day: Daily via email | Daily via Instagram New to GMAT Club? Watch this Video

 It is currently 28 Feb 2020, 17:39 ### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

#### Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here. # If 175 billion french francs is equivalent to 35 billion

Author Message
TAGS:

### Hide Tags

Intern Joined: 21 Nov 2013
Posts: 37
If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

5
22 00:00

Difficulty: 55% (hard)

Question Stats: 61% (01:20) correct 39% (01:13) wrong based on 613 sessions

### HideShow timer Statistics

If 175 billion French francs is equivalent to 35 billion United States dollars, which of the following expressions represents the number of United States dollars equivalent to f francs?

A) f-140
B) 5f
C) 7f
D) f/5
E) f/7

The OE starts with "In this solution it is assumed that 1 billion = 109. However,
only minor modifications in the first three steps are needed (replace each appearance
of 10^9 with 10^12)".

What do they mean by that and why is that important for the question at all.
It confused me. Btw. I feel the "109" ought to be "10^9" but they misspelled it.

Millions has six zeros and billions has nine. And both numbers are given in "billions" so we
can ignore that completely anyway.

I will post OA separately but would be good to know why they wrote this. Supposedly,
everything has a reason.

(Small point: Source is not OG but Official GMATPrep Software)

Originally posted by BabySmurf on 19 Jan 2014, 10:01.
Last edited by BabySmurf on 19 Jan 2014, 11:45, edited 1 time in total.
Intern Joined: 21 Nov 2013
Posts: 37
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

4
3
175 billion French francs = 35 billion USD Ignore billion

175 French francs = 35 USD divide by 5

35 French francs = 7 USD divide by 7

5 French francs = 1 USD divide by 5

1 French francs = 1/5 USD

f is just a variable. They could have written x, but they wrote f to
make it confusing.

Number of USD equivalent to French francs are given above. 1 Franc equals 1/5 USD.
So x Francs or for this case f equals f/5 francs.
##### General Discussion
SVP Status: The Best Or Nothing
Joined: 27 Dec 2012
Posts: 1713
Location: India
Concentration: General Management, Technology
WE: Information Technology (Computer Software)
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

2
1
Drop the term "Billion"

175f = 35d

$$f = \frac{35}{175} * d$$

$$f = \frac{1}{5} * d$$

Intern Joined: 25 Sep 2014
Posts: 5
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

You know that 175 Francs are equal to 35 USD. (Because both currencies are in billions anyway, you can ignore the units here)

The question asks for the right-hand side of the expression USD=.... and tries to confuse you by giving you variable "f" to represent the number of Francs. Don't let the GMAT trick you, you know better than that. You probably recognized that there is a variable in every answer choice. Get your thoughts straight and pick a smart value for "f". In fact, the question already provided you with a smart number. 175.

--> If Francs=f=175 and USD=35:

Francs(or "f)*x=USD
175*x=35
x=35/175=1/5 --> So f*1/5=USD, or f/5=USD
Manager Joined: 24 Nov 2013
Posts: 55
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

1
we can eliminate few options if we are running out of time
175 francs is equivalent to 35 dollars. ..
so the dollar equivalent of f francs has to be a figure less than f itself.
eliminate b and c.
Math Expert V
Joined: 02 Sep 2009
Posts: 61549
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

BabySmurf wrote:
If 175 billion French francs is equivalent to 35 billion United States dollars, which of the following expressions represents the number of United States dollars equivalent to f francs?

A) f-140
B) 5f
C) 7f
D) f/5
E) f/7

The OE starts with "In this solution it is assumed that 1 billion = 109. However,
only minor modifications in the first three steps are needed (replace each appearance
of 10^9 with 10^12)".

What do they mean by that and why is that important for the question at all.
It confused me. Btw. I feel the "109" ought to be "10^9" but they misspelled it.

Millions has six zeros and billions has nine. And both numbers are given in "billions" so we
can ignore that completely anyway.

I will post OA separately but would be good to know why they wrote this. Supposedly,
everything has a reason.

(Small point: Source is not OG but Official GMATPrep Software)

Check other Conversion problems to practice in Special Questions Directory.
_________________
Director G
Joined: 23 Jan 2013
Posts: 512
Schools: Cambridge'16
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

Just logic:

1 dollar is 5 times as expensive as 1 franc. So if you have F as a amount of francs, the equivalent amount of dollars is F/5

Algebra: 175f=35d => 5f=d, so f=d/5

D
Current Student B
Status: DONE!
Joined: 05 Sep 2016
Posts: 341
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

175 Francs = 35 Dollars (removed Billion portion for simplicity)

175F=35D (1)
175F/35=D (manipulate (1)) & reduce --> F/5 = D

D.
Target Test Prep Representative G
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2801
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

3
BabySmurf wrote:
If 175 billion French francs is equivalent to 35 billion United States dollars, which of the following expressions represents the number of United States dollars equivalent to f francs?

A) f-140
B) 5f
C) 7f
D) f/5
E) f/7

We are given that 175 billion French francs = 35 billion United States dollars. We need to convert f francs to dollars. We can let x be the number of dollar that is equivalent to f francs and solve this problem using a proportion.

(175 billion)/(35 billion) = f/x

175/35 = f/x

175x = 35f

x = 35f/175

x = f/5

_________________

# Jeffrey Miller

Jeff@TargetTestPrep.com

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

Director S
Status: Come! Fall in Love with Learning!
Joined: 05 Jan 2017
Posts: 515
Location: India
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

175 billion francs = 35 billion dollars
1 franc = 35/175 dollar = ⅕ dollar
f francs = f/5 dollars
_________________
GMAT Mentors VP D
Joined: 09 Mar 2016
Posts: 1222
If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

Bunuel wrote:
BabySmurf wrote:
If 175 billion French francs is equivalent to 35 billion United States dollars, which of the following expressions represents the number of United States dollars equivalent to f francs?

A) f-140
B) 5f
C) 7f
D) f/5
E) f/7

The OE starts with "In this solution it is assumed that 1 billion = 109. However,
only minor modifications in the first three steps are needed (replace each appearance
of 10^9 with 10^12)".

What do they mean by that and why is that important for the question at all.
It confused me. Btw. I feel the "109" ought to be "10^9" but they misspelled it.

Millions has six zeros and billions has nine. And both numbers are given in "billions" so we
can ignore that completely anyway.

I will post OA separately but would be good to know why they wrote this. Supposedly,
everything has a reason.

(Small point: Source is not OG but Official GMATPrep Software)

Check other Conversion problems to practice in Special Questions Directory.

Bunuel

if 1 USD equals 5 CHF

then why option B is icorrect ? 5 USD = 5*5 CHF

pushpitkc may be you can explain the logic the question is : which of the following expressions represents the number of United States dollars equivalent to f francs?

Dollar to Franc
1 dollar = 5 francs

so 1d = 5F

so why B option is incorrect ? Senior Manager G
Joined: 29 Dec 2017
Posts: 368
Location: United States
Concentration: Marketing, Technology
GMAT 1: 630 Q44 V33 GMAT 2: 690 Q47 V37 GMAT 3: 710 Q50 V37 GPA: 3.25
WE: Marketing (Telecommunications)
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

The easiest method from my school time:

175 = 35
f = x (x - what we need to find),

multiply by diagonal numbers that do not have x and divide it then by the number, which is diagonal to x

x =F*35/175

It's a very convinient method to convert numbers.
Math Expert V
Joined: 02 Sep 2009
Posts: 61549
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

1
dave13 wrote:
Bunuel wrote:
BabySmurf wrote:
If 175 billion French francs is equivalent to 35 billion United States dollars, which of the following expressions represents the number of United States dollars equivalent to f francs?

A) f-140
B) 5f
C) 7f
D) f/5
E) f/7

The OE starts with "In this solution it is assumed that 1 billion = 109. However,
only minor modifications in the first three steps are needed (replace each appearance
of 10^9 with 10^12)".

What do they mean by that and why is that important for the question at all.
It confused me. Btw. I feel the "109" ought to be "10^9" but they misspelled it.

Millions has six zeros and billions has nine. And both numbers are given in "billions" so we
can ignore that completely anyway.

I will post OA separately but would be good to know why they wrote this. Supposedly,
everything has a reason.

(Small point: Source is not OG but Official GMATPrep Software)

Check other Conversion problems to practice in Special Questions Directory.

Bunuel

if 1 USD equals 5 CHF

then why option B is icorrect ? 5 USD = 5*5 CHF

pushpitkc may be you can explain the logic the question is : which of the following expressions represents the number of United States dollars equivalent to f francs?

Dollar to Franc
1 dollar = 5 francs

so 1d =[color=#ff0000] 5F

so why B option is incorrect ? The question asks: which of the following expressions represents the number of United States dollars equivalent to f francs?

So, the question is: f francs = ? dollars. Do you see the difference between the actual question and the answer you are getting (highlighted)?

1 dollar = 5 francs, so 1 franc = 1/5 dollars. Therefore, f francs = f/5 dollars.
_________________
ISB School Moderator P
Joined: 08 Dec 2013
Posts: 706
Location: India
Concentration: Nonprofit, Sustainability
Schools: ISB
GMAT 1: 630 Q47 V30 WE: Operations (Non-Profit and Government)
Re: If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

BabySmurf wrote:
If 175 billion French francs is equivalent to 35 billion United States dollars, which of the following expressions represents the number of United States dollars equivalent to f francs?

A) f-140
B) 5f
C) 7f
D) f/5
E) f/7

The OE starts with "In this solution it is assumed that 1 billion = 109. However,
only minor modifications in the first three steps are needed (replace each appearance
of 10^9 with 10^12)".

What do they mean by that and why is that important for the question at all.
It confused me. Btw. I feel the "109" ought to be "10^9" but they misspelled it.

Millions has six zeros and billions has nine. And both numbers are given in "billions" so we
can ignore that completely anyway.

I will post OA separately but would be good to know why they wrote this. Supposedly,
everything has a reason.

(Small point: Source is not OG but Official GMATPrep Software)

175 = 35
1= 35/175
Then f = (35/175) * f => f/5
GMAT Club Legend V
Joined: 11 Sep 2015
Posts: 4360
If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

Top Contributor
BabySmurf wrote:
If 175 billion French francs is equivalent to 35 billion United States dollars, which of the following expressions represents the number of United States dollars equivalent to f francs?

A) f-140
B) 5f
C) 7f
D) f/5
E) f/7

We can solve this question using equivalent ratios in the form: French francs/United States dollars

Let x = United States dollars equivalent to f francs

We get: 175/35 = f/x
Cross multiply to get: 175x = 35f
Divide both sides by 175 to get: x = 35f/175
Simplify to get: x = f/5

Cheers,
Brent
_________________
Intern Joined: 14 Feb 2020
Posts: 4
If 175 billion french francs is equivalent to 35 billion  [#permalink]

### Show Tags

[quote="BabySmurf"]If 175 billion French francs is equivalent to 35 billion United States dollars, which of the following expressions represents the number of United States dollars equivalent to f francs?

A) f-140
B) 5f
C) 7f
D) f/5
E) f/7

Take away the billion so 35 usd = 175 francs or 1 usd = 5 francs.

plugin a number for f franks that equals 1 usd for every 5 francs.
5 francs = how many usd? answer 1
10 francs = 2 usd
15 = 3 usd etc

plugin the chosen number in each answer choice and choose the correct answer.
so if you choose 10 for f, look for the answer that gives 2.
D) 10/5 = 2 If 175 billion french francs is equivalent to 35 billion   [#permalink] 25 Feb 2020, 21:28
Display posts from previous: Sort by

# If 175 billion french francs is equivalent to 35 billion
{"ft_lang_label":"__label__en","ft_lang_prob":0.88526857,"math_prob":0.8936228,"size":13183,"snap":"2020-10-2020-16","text_gpt3_token_len":3787,"char_repetition_ratio":0.1890887,"word_repetition_ratio":0.53425807,"special_character_ratio":0.30630356,"punctuation_ratio":0.10752688,"nsfw_num_words":0,"has_unicode_error":false,"math_prob_llama3":0.96178,"pos_list":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102],"im_url_duplicate_count":[null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null],"WARC_HEADER":"{\"WARC-Type\":\"response\",\"WARC-Date\":\"2020-02-29T01:39:48Z\",\"WARC-Record-ID\":\"<urn:uuid:d60e0089-7d8e-438b-a659-b11954be72b6>\",\"Content-Length\":\"929320\",\"Content-Type\":\"application/http; msgtype=response\",\"WARC-Warcinfo-ID\":\"<urn:uuid:ba767c31-bb3d-4eaf-88e8-99d6b7a8ae3a>\",\"WARC-Concurrent-To\":\"<urn:uuid:925939eb-6e5c-4da9-a7d2-181088230afb>\",\"WARC-IP-Address\":\"198.11.238.99\",\"WARC-Target-URI\":\"https://gmatclub.com/forum/if-175-billion-french-francs-is-equivalent-to-35-billion-166318.html\",\"WARC-Payload-Digest\":\"sha1:KV7ZJF7OEJ6CENB2GALOJDQE666KBFV3\",\"WARC-Block-Digest\":\"sha1:C3HSREFIHVUMYPMHTU5GL6OVZMLQZO44\",\"WARC-Identified-Payload-Type\":\"application/xhtml+xml\",\"warc_filename\":\"/cc_download/warc_2020/CC-MAIN-2020-10/CC-MAIN-2020-10_segments_1581875148163.71_warc_CC-MAIN-20200228231614-20200229021614-00171.warc.gz\"}"}