a b and c can complete a piece of work in 24 6 and 12 days respectively working together they will complete the same work in
3 3/7 days
amy takes an hour so she does
1/60 of yhe job per minute
father takes 30 mins so he does
1/30 of the job per minute
 
together they complete
1/60 + 1/30 per minute 
or 3/60 of the job per minute
 
(3/60)x = 1
x = 60/3
x = 20 minutes a, b and c a - ii, b - iv, c - i, d - iii a, b & c express as a sum of perfect square 16 a square + b square + 9 c square minus 4 a b minus 3 b c - 12 ca? 24 given statement is true. a sum of money becomes 3 times in 5 years at simple interest. in how many years will the same sum become 6 times at the same rate of simple interest? a
c
a
a
b 

those are answers ur welcome 1 a c d
2 a
3 c
4 b
5 c
i got a 100%