The average of 9 numbers is 42. If each number is decreased by 6, what is the new average? MCQ with Answer and Explanation

The average of 9 numbers is 42. If each number is decreased by 6, what is the new average?

A. 42

B. 36

C. 30

D. 48

Answer: Option B

New average =42-6=36.

This question belongs to: Maths Average

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Question #1 Report Error

Average of 8 numbers 1000. If average of 5 is 995, average of remaining 3?

A. 1007

B. 1010

C. 1005

D. 1008.33

Correct Answer: Option D

Explanation:
Sum8=8000. Sum5=4975. Remaining=3025. Average≈1008.33.

This question belongs to: Maths Average

Question #2 Report Error

The average of 10,20,30,40 is

A. 30

B. 20

C. 35

D. 25

Correct Answer: Option D

Explanation:
Sum=100. Average=25.

This question belongs to: Maths Average

Question #3 Report Error

Average of 8 numbers 1250. If average of 5 is 1245, average of remaining 3?

A. 1258.33

B. 1260

C. 1257

D. 1255

Correct Answer: Option A

Explanation:
Sum8=10000. Sum5=6225. Remaining=3775. Average≈1258.33.

This question belongs to: Maths Average