If average of 15 numbers is 50 and average of 5 is 55, average of remaining 10? MCQ with Answer and Explanation

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If average of 15 numbers is 50 and average of 5 is 55, average of remaining 10?

A. 48

B. 47.5

C. 50

D. 45

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum15=750. Sum5=275. Remaining=475. Average=47.5.

This question belongs to: Maths Average

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Question #1

Average of 12 numbers 920. If average of 8 is 915, average of remaining 4?

A. 928

B. 925

C. 932

D. 930

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Correct Answer: Option D

Explanation:
Sum12=11040. Sum8=7320. Remaining=3720. Average=930.

This question belongs to: Maths Average

Question #2

If average of 5 numbers is 36 and average of 3 is 30, average of remaining 2?

A. 48

B. 42

C. 40

D. 45

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Correct Answer: Option D

Explanation:
Sum5=180. Sum3=90. Remaining=90. Average=45.

This question belongs to: Maths Average

Question #3

Average of 10,20,30,40 is

A. 22.5

B. 30

C. 25

D. 20

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Correct Answer: Option C

Explanation:
100/4=25.

This question belongs to: Maths Average

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