Average of 8 numbers is 50. If average of 5 is 45, average of other 3? MCQ with Answer and Explanation

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Average of 8 numbers is 50. If average of 5 is 45, average of other 3?

A. 50

B. 55

C. 60

D. 58.33

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum8=400. Sum5=225. Remaining=175. Average≈58.33.

This question belongs to: Maths Average

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Question #1

The average of 3 numbers is 28. If two numbers are 25 and 30, find the third.

A. 26

B. 31

C. 29

D. 27

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Correct Answer: Option C

Explanation:
Sum=3×28=84. Third =84-25-30=29.

This question belongs to: Maths Average

Question #2

The average of first 8 multiples of 5 is

A. 22.5

B. 20

C. 25

D. 30

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Correct Answer: Option A

Explanation:
5*(1+8)/2=22.5.

This question belongs to: Maths Average

Question #3

The average of 25,50,75 is

A. 45

B. 60

C. 50

D. 55

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Correct Answer: Option C

Explanation:
Sum=150. Average=50.

This question belongs to: Maths Average

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