Average of 10 numbers 1330. If average of 6 is 1325, average of remaining 4? MCQ with Answer and Explanation

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Average of 10 numbers 1330. If average of 6 is 1325, average of remaining 4?

A. 1337.5

B. 1340

C. 1336

D. 1335

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum10=13300. Sum6=7950. Remaining=5350. Average=1337.5.

This question belongs to: Maths Average

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Question #1

The average of 5 numbers is 44. If each number is decreased by 6, what is the new average?

A. 50

B. 32

C. 38

D. 44

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Correct Answer: Option C

Explanation:
New average =44-6=38.

This question belongs to: Maths Average

Question #2

Average of 12 numbers 970. If average of 8 is 965, average of remaining 4?

A. 978

B. 980

C. 975

D. 982

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Correct Answer: Option B

Explanation:
Sum12=11640. Sum8=7720. Remaining=3920. Average=980.

This question belongs to: Maths Average

Question #3

The average of 15 observations is 20. If each observation is increased by 3, what is the new average?

A. 17

B. 20

C. 30

D. 23

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Correct Answer: Option D

Explanation:
New average = old average + increase =20+3=23.

This question belongs to: Maths Average

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