Question Paper from: IBPS Clerk Prelims 2016

The total of the ages of a class of 60 girls is 900 years. The average age of 20 girls is 12 years and that of the other 20 girls is 16 years. What is the average age of the remaining girls?

15 years

None of these

14 years

17 years

16 years

Solution:

Chapter Name: Problems on Ages

(20)12 + 20(16) + 20x = 900

20x = 900 − 240 − 320

20x = 340

x = 17 years

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IBPS Clerk Prelims 2016

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