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Quantitative Aptitude

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Percentage & Averages

Question
12 out of 25
 

The average age of a class of 20 boys is 20 years 3 months, the average of the first 5 boys is 13 years 2 months and other 12 is 11 years. Find the average age of remaining boy.



A 95 years
B 221 years
C 92 years
D 132 years
E None of these

Ans. C Total age = 20 x 20 years

Age of given 18 boy = ( 6 x 13 x ) + 12 x 11

= 79 + 132 = 221 years

Average age of remaining oy = 405 – 221 = = 92 years

Percentage & Averages Flashcard List

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