The average of 10 numbers is increased by 2 when one number 15 is replaced by another. What is the new number? MCQ with Answer and Explanation

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The average of 10 numbers is increased by 2 when one number 15 is replaced by another. What is the new number?

A. 35

B. 40

C. 25

D. 30

Answer: Option A

Solution (By JKSSB Mock Tests)

Increase in sum =10×2=20. New number =15+20=35.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1

What is the average of the first 5 composite numbers?

A. 7.6

B. 7.4

C. 8.0

D. 7.2

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Correct Answer: Option B

Explanation:
First 5 composites: 4,6,8,9,10 sum=37, avg=37/5=7.4.

This question belongs to: Maths Average

Question #2

Average of 25,35,45,55 is

A. 42

B. 38

C. 45

D. 40

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Correct Answer: Option D

Explanation:
Sum=160. Average=40.

This question belongs to: Maths Average

Question #3

Average of 28,35,42 is

A. 40

B. 33

C. 35

D. 30

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Correct Answer: Option C

Explanation:
105/3=35.

This question belongs to: Maths Average

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