CAT 2019 Shift 2 Paper

Question : 69 of 100

Marks: +1, -0

The salaries of Ramesh, Ganesh and Rajesh were in the ratio 6:5:7 in 2010, and in the ratio 3:4:3 in 2015. If Ramesh’s salary increased by 25% during 2010-2015, then the percentage increase in Rajesh’s salary during this period is closest to

Validate

Solution:

Let their salaries in 2010 be

6 x, 5 x

and

7 x

respectively.
Also, let their salaries in 2015 be

3 y, 4, y

and

3 y

respectively
Given,

3 y=1.25 × 6 x

y=2.5 x

Therefore, salary of Rajesh in

2015=3 y=3 × 2.5 x=7.5 x

Percentage increase

=(\;{7.5 x-7 x}/{7 x}) × 100 ≈ 7 \%

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