Latest CAT Aptitude Question SOLUTION: the ratios of the monthly income of A and B are in the ratio of 3:4.The ratio of the monthly expenditures of A and B is 4:5 .Find the ratio of their savings

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(#M40035057) CAT Numerical Ability question ratios Keep an EYE

the ratios of the monthly income of A and B are in the ratio of 3:4.The ratio of the monthly
expenditures of A and B is 4:5 .Find the ratio of their savings

Asked In CAT (10 years ago)

Unsolved Read Solution (3)

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Read Solution (3) :

Rutuparn Bhave  (10 years ago)

since we donot know the common factor of income and salary...
therefore we cant find the ratio of their savings..!!!
answer is cannot be determined

Is this solution Helpfull? Yes (3) | No (1)  

likhith vallabhaneni  (10 years ago)

lets take the income of A=3k
lets take the income of B=4k
as welllas expenditures are 4x,5x
savings =income-expenditures
so savings ratio is =3k-4x/4k-5x;
now equate the aboue ratio with the given options only one option will satisify
the equation
the options are
A)9:10 B)3:4 c)13;20 D)4:5
option a 3k-4x/4k-5x=9/10;
if we solve the abouve we will get x=-6/5k income should not be negative
so option a is wrong
solve the remaining similarly then we will get the solution

Is this solution Helpfull? Yes (1) | No (1)  

shree  (10 years ago)

income ratio is 3:4
then we suppose that 30000 and 40000.
now exp ratio is 4:5
so we subtract 24000 from 30000 and 30000 from 40000.
now both have remaining amount is 60000 and 10000
so savivg ratio 3:5
ANSWER == 3:5

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