Average of 20 numbers 40. If each decreased by 5, new average? MCQ with Answer and Explanation

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Average of 20 numbers 40. If each decreased by 5, new average?

A. 35

B. 45

C. 30

D. 40

Answer: Option A

Solution (By JKSSB Mock Tests)

New average=35.

This question belongs to: Maths Average

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Question #1

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The average of 24,36,48,60 is

A. 39

B. 42

C. 40

D. 45

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Correct Answer: Option B

Explanation:
168/4=42.

This question belongs to: Maths Average

Question #2

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Average of 8 numbers 400. If average of 5 is 395, average of remaining 3?

A. 405

B. 407

C. 410

D. 408.33

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Correct Answer: Option D

Explanation:
Sum8=3200. Sum5=1975. Remaining=1225. Average≈408.33.

This question belongs to: Maths Average

Question #3

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The average of 5 numbers is 25. If one number is 35, find the average of the remaining 4.

A. 22

B. 24

C. 23

D. 22.5

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Correct Answer: Option D

Explanation:
Sum=5×25=125. Remaining sum=125-35=90. Avg=90/4=22.5.

This question belongs to: Maths Average

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