Average of 15 numbers 1160. If average of 9 is 1155, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 1160. If average of 9 is 1155, average of remaining 6?

A. 1168

B. 1165

C. 1170

D. 1167.5

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum15=17400. Sum9=10395. Remaining=7005. Average=1167.5.

This question belongs to: Maths Average

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Question #1

The average of 6 numbers is 24. If one number is 36, find the average of the rest.

A. 22

B. 22.8

C. 20.4

D. 21.6

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Correct Answer: Option D

Explanation:
Sum=6×24=144. Rest sum=144-36=108. Avg=108/5=21.6.

This question belongs to: Maths Average

Question #2

The average of 4 numbers is 16. If one number is 24, find the average of the other three.

A. 13

B. 14

C. 12

D. 13.33

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Correct Answer: Option D

Explanation:
Sum=4×16=64. Other sum=64-24=40. Avg=40/3=13.33.

This question belongs to: Maths Average

Question #3

Average of 30 numbers 42. If average of 20 is 40, average of remaining 10?

A. 46

B. 48

C. 45

D. 44

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Correct Answer: Option A

Explanation:
Total=1260. Sum20=800. Remaining=460. Average=46.

This question belongs to: Maths Average

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