The average of 4 numbers is 20. If each number is increased by 5, what is the new average? MCQ with Answer and Explanation

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The average of 4 numbers is 20. If each number is increased by 5, what is the new average?

A. 25

B. 15

C. 30

D. 20

Answer: Option A

Solution (By JKSSB Mock Tests)

New average =20+5=25.

This question belongs to: Maths Average

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Question #1

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The average of first 15 multiples of 4 is

A. 30

B. 28

C. 32

D. 34

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Correct Answer: Option C

Explanation:
4*(1+15)/2=32.

This question belongs to: Maths Average

Question #2

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Average of numbers divisible by 6 from 6 to 60.

A. 32

B. 33

C. 36

D. 30

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Correct Answer: Option B

Explanation:
6 to 60, 10 numbers. Average (6+60)/2=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. 23

B. 24

C. 22.5

D. 22

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Correct Answer: Option C

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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