Average of 12 numbers 970. If average of 8 is 965, average of remaining 4? MCQ with Answer and Explanation

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

A. 975

B. 980

C. 978

D. 982

Answer: Option B

Solution (By JKExamLibrary)

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

This question belongs to: Maths Average

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Question #1

Average of 25 numbers 80. If average of 10 is 85, average of remaining 15?

A. 75

B. 76.67

C. 77

D. 78

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Correct Answer: Option B

Explanation:
Total=2000. Sum10=850. Remaining=1150/15≈76.67.

This question belongs to: Maths Average

Question #2

Average of 15 numbers 1110. If average of 9 is 1105, average of remaining 6?

A. 1117.5

B. 1115

C. 1118

D. 1120

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Correct Answer: Option A

Explanation:
Sum15=16650. Sum9=9945. Remaining=6705. Average=1117.5.

This question belongs to: Maths Average

Question #3

The average of 5 numbers is 33. If each number is decreased by 2, what is the new average?

A. 33

B. 31

C. 35

D. 29

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Correct Answer: Option B

Explanation:
New average =33-2=31.

This question belongs to: Maths Average

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