Two numbers A and B are such that the sum of 10 of A and 8 of B is th of the sum of 12 of A and 16 o...........

Quantitative Aptitude (CHSL) Ratio, Proportion

Two numbers, A and B, are such that the sum of 10% of A and 8% of B is th of the sum of 12% of A and 16% of B. The ratio A : 8 is:

This questions was previously asked in

SSC CHSL 31st May 2022 Shift-2

2 : 3

4 : 7

2 : 7

4 : 3

Correct option 2: 4:7

a% of b =a*b/100

Solution

10 % A + 8 % B = 3/5(12 % of A + 16 % of B)

=> 10 A + 8 B= 3/5(12 A+16B)

=> 50A+40B= 36A+ 48B

=> 14A= 8B

A/B= 8/14= 4/7

=> A: B=4:7

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