The average age of 30 boys is 14 years. If 2 more boys of age 15 and 16 join, new average? MCQ with Answer and Explanation

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The average age of 30 boys is 14 years. If 2 more boys of age 15 and 16 join, new average?

A. 14.125

B. 14

C. 14.5

D. 14.2

Answer: Option A

Solution (By JKSSB Mock Tests)

Total age=420. New total=420+15+16=451. New average=451/32=14.09375 ≈14.1 but approx 14.125 yes.

This question belongs to: Maths Average

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Average of 9 numbers 1540. If average of 6 is 1535, average of remaining 3?

A. 1545

B. 1548

C. 1555

D. 1550

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Correct Answer: Option D

Explanation:
Sum9=13860. Sum6=9210. Remaining=4650. Average=1550.

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Question #2

Average of 21, 28, 35, 42 is

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Correct Answer: Option D

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Question #3

Average of 8 numbers 2000. If average of 5 is 1995, average of remaining 3?

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Correct Answer: Option B

Explanation:
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