The average of 9 numbers is 35. If each number is decreased by 5, what is the new average? MCQ with Answer and Explanation

The average of 9 numbers is 35. If each number is decreased by 5, what is the new average?

A. 35

B. 40

C. 25

D. 30

Answer: Option D

New average =35-5=30.

This question belongs to: Maths Average

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Question #1 Report Error

Average of 15 numbers 660. If average of 9 is 655, average of remaining 6?

A. 668

B. 670

C. 665

D. 667.5

Correct Answer: Option D

Explanation:
Sum15=9900. Sum9=5895. Remaining=4005. Average=667.5.

This question belongs to: Maths Average

Question #2 Report Error

The average of 8 numbers is 30. If one number is 40, find the average of the remaining 7.

A. 28.57

B. 27.5

C. 29

D. 28

Correct Answer: Option A

Explanation:
Sum=8×30=240. Remaining sum=240-40=200. Avg=200/7=28.57.

This question belongs to: Maths Average

Question #3 Report Error

Find the average of all numbers from 1 to 15 that are divisible by 3.

A. 12

B. 8

C. 10

D. 9

Correct Answer: Option D

Explanation:
Numbers: 3,6,9,12,15 sum=45, count=5, avg=9.

This question belongs to: Maths Average