Last visit was: 14 Sep 2024, 07:01 It is currently 14 Sep 2024, 07:01
Toolkit
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.

# What is the ratio of the number of cups of flour to the number of cups

SORT BY:
Tags:
Show Tags
Hide Tags
Manager
Joined: 19 May 2008
Posts: 72
Own Kudos [?]: 57 [40]
Given Kudos: 0
Location: Mumbai
Manager
Joined: 21 Jul 2009
Posts: 218
Own Kudos [?]: 450 [7]
Given Kudos: 22
Concentration: World Domination, Finance, Political Corporatization, Marketing, Strategy
Schools:LBS, INSEAD, IMD, ISB - Anything with just 1 yr program.
Q47  V32
Director
Joined: 17 Jun 2008
Posts: 614
Own Kudos [?]: 445 [5]
Given Kudos: 0
General Discussion
Director
Joined: 30 Jun 2008
Posts: 538
Own Kudos [?]: 2820 [1]
Given Kudos: 1
Re: What is the ratio of the number of cups of flour to the number of cups [#permalink]
tharunv
What is the ratio of the number of cups of flour to the number of cups of sugar required in a certain cake recipe?
(1) The number of cups of flour required in the recipe is 250% of the number of cups of sugar required in the recipe
(2) 1 1/2 more cups of flour than cups of sugar are required in the recipe.

I got the wrong answer and I now know the correct answer but need the rationale - could someone tell me the answer and the rationale behind the answer? Thanks. I'll post the OA later.

The question is asking -- what is f/s ?

(1) f = 250%(s) = (250*s)/100 ------ f/s = 5/2 ---- sufficient
(2) f = s + s(1 1/2) = s + (3*s)/2 = (5*s)/2 ------ f/s = 5/2 ---- sufficient

Senior Manager
Joined: 25 Oct 2008
Posts: 361
Own Kudos [?]: 6604 [0]
Given Kudos: 100
Location: Kolkata,India
Q44  V38
Re: What is the ratio of the number of cups of flour to the number of cups [#permalink]
Quote:
f = s + s(1 1/2) = s + (3*s)/2 = (5*s)/2 ------ f/s = 5/2 ---- sufficient
Guys why is this wrong?whats the silly mistake here I am unable to understand..
Retired Moderator
Joined: 20 Dec 2010
Posts: 1107
Own Kudos [?]: 4791 [4]
Given Kudos: 376
Re: What is the ratio of the number of cups of flour to the number of cups [#permalink]
4
Kudos
nikhilsrl
What is the ratio of number of cups of flour to number of cups of sugar in a cake recipe?

1) The number of cups of flour required in the reciped is 250% of number of cups of sugar required.
2) 1.5 more cups of flour than cups of of sugar are required in the recipe

OA is provided.

Why not D. I am not clear why option (2) cannot give the ratio.

Let the number of cups of flour = F
Let the number of cups of sugar = S

Q: What is F/S=?

1.
F=2.5S
F/S=2.5
Sufficient.

2. F=1.5+S

Say; S=10; F=11.5
F/S = 11.5/10=1.15

S=100;F=101.5
F/S=101.5/100=1.015

Not Sufficient.

Ans: "A"
Retired Moderator
Joined: 16 Nov 2010
Posts: 903
Own Kudos [?]: 1202 [1]
Given Kudos: 43
Location: United States (IN)
Concentration: Strategy, Technology
Re: What is the ratio of the number of cups of flour to the number of cups [#permalink]
1
Bookmarks
From (1)

F/C = 250 % = 250/100, so enough (the ratio can be found = 2.5)

Sufficient

From (2)

F = C + 1.5

Ratio can't be found

So not sufficient

Intern
Joined: 11 Apr 2011
Posts: 16
Own Kudos [?]: 11 [0]
Given Kudos: 3
Location: London
Concentration: General
Q40  V42
WE 1: 3 yrs f/t manager in aerospace (IT - Commercial - Int'l Mktg)
WE 2: 5 yrs freelance consultant to Gov't
Re: What is the ratio of the number of cups of flour to the number of cups [#permalink]
following a 'don't solve' approach, we can see that the question is focused on ratios (i.e proportions of a mixture) and needs the relationship between flour and sugar to be expressed in terms of a multiplier, fraction, percentage or two fixed values for the quantities involved.

1) sets out a relationship between the only two ingredients of the mixture, based on percentages *sufficient*.

2) sets out a relationship on a numerical value. For a proportion this won't work, as 1.5 cups to 3 cups is a very different proportion to a possible 100 cups to 101.5 *insufficient*

A is your answer and hopefully without pausing to work out all the numbers you have banked yourself a minute or so extra for later in the quant section (though with your having a Q50, I'll be the one asking your advice!!)
Director
Joined: 29 Nov 2012
Posts: 575
Own Kudos [?]: 6237 [0]
Given Kudos: 543
Re: What is the ratio of the number of cups of flour to the number of cups [#permalink]
Statement 2 is

F = s + 1.5?

Is this correct
Math Expert
Joined: 02 Sep 2009
Posts: 95503
Own Kudos [?]: 658480 [1]
Given Kudos: 87257
Re: What is the ratio of the number of cups of flour to the number of cups [#permalink]
1
Kudos
fozzzy
What is the ratio of the number of cups of flour to the number of cups of sugar required in a certain cake recipe?

(1) The number of cups of flour required in the recipe is 250% of the number of cups of sugar required in the recipe
(2) 1 1/2 more cups of flour than cups of sugar are required in the recipe.

Statement 2 is

F = s + 1.5?

Is this correct

Yes, (2) translates: F = S + 3/2.
Intern
Joined: 13 Jun 2013
Posts: 5
Own Kudos [?]: 2 [0]
Given Kudos: 8
Re: What is the ratio of the number of cups of flour to the number of cups [#permalink]
fozzzy
Statement 2 is

F = s + 1.5?

Is this correct

Yes. I also chose D at first but in retrospect the question is easy if you read the word problem correctly.

Statement 1 says F = S multiplied by something, because it states '250% of y' of = times = *
Statement 2 says F = S + 1.5 indeed, as the wording 'x more ... than y' = y + x

The first statement thus gives you a ratio (sufficient), the second does not as F could equal 5.5 and S 4 cups. Or F could equal 7 and S 5.5 cups which give different ratios.

Director
Joined: 26 Oct 2016
Posts: 506
Own Kudos [?]: 3423 [2]
Given Kudos: 877
Location: United States
Schools: HBS '19
GMAT 1: 770 Q51 V44
GPA: 4
WE:Education (Education)
Re: What is the ratio of the number of cups of flour to the number of cups [#permalink]
1
Kudos
1
Bookmarks
Let's say
1)
x = sugar
5/2x = flour
5/2:1 establishes the ratio. This is sufficient.

2) x=sugar
x + 3/2 = flour
x=1 and then flour could be 5/2 or
x=2 and then flour could be 7/2..Since this variable, this is not sufficient.

Manager
Joined: 03 Sep 2018
Posts: 173
Own Kudos [?]: 94 [0]
Given Kudos: 924
Location: Netherlands
GPA: 4
Re: What is the ratio of the number of cups of flour to the number of cups [#permalink]
Should 250% more not be 3.5?
Non-Human User
Joined: 09 Sep 2013
Posts: 34832
Own Kudos [?]: 878 [0]
Given Kudos: 0
Re: What is the ratio of the number of cups of flour to the number of cups [#permalink]
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Re: What is the ratio of the number of cups of flour to the number of cups [#permalink]
Moderator:
Math Expert
95503 posts
{"found_math": false, "script_math_tex": 0, "script_math_asciimath": 0, "math_annotations": 0, "math_alttext": 0, "mathml": 0, "mathjax_tag": 0, "mathjax_inline_tex": 0, "mathjax_display_tex": 0, "mathjax_asciimath": 0, "img_math": 0, "codecogs_latex": 0, "wp_latex": 0, "mimetex.cgi": 0, "/images/math/codecogs": 0, "mathtex.cgi": 0, "katex": 0, "math-container": 0, "wp-katex-eq": 0, "align": 0, "equation": 0, "x-ck12": 0, "texerror": 0}