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Question 23 : 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

  1. 7
  2. 8
  3. 9
  4. 10

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Explanatory Answer

The salaries of Ramesh, Ganesh and Rajesh were in the ratio 6: 5: 7 in 2010
In 2015, their salaries are in the ratio 3: 4: 3 respectively.
It is also given that; Ramesh's salary increases by 25% during 2010 - 2015
So, Ramesh's salary in 2015 = x 6 = 7.5
Salary in 2015 = 3: 4: 3 (Given)
Salary in 2015 = 7.5: x: y (From data)
3 in order to jump to 7.5, must be multiplied by 2.5
So, multiplying 2.5 to all the other values,
Salary in 2015 = 7.5: 10: 7.5
Percentage increase in Rajesh's salary during 2010 - 2015 = Percentage increase from 7 to 7.5 = x 100, which is close to 7%


The question is "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 "

Hence, the answer is 7

Choice A is the correct answer.

 

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