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
Correct Answer :
7
Solution :
Let the salaries of Ramesh, Ganesh, and Rajesh in 2010 be , , and respectively.
Let their salaries in 2015 be , , and respectively.
It is given that Ramesh's salary increased by 25% during 2010-2015. Therefore,
This gives .
Now, Rajesh's salary in 2010 was , and in 2015 it is:
The percentage increase in Rajesh's salary is:
The percentage increase is closest to 7.
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