If average of 10 numbers is 50. If one number is 80, what is average of remaining 9? MCQ with Answer and Explanation

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If average of 10 numbers is 50. If one number is 80, what is average of remaining 9?

A. 49

B. 47

C. 45

D. 48

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum10=500. Remaining=420. Average=46.67? Adjust.

This question belongs to: Maths Average

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Question #1

Average of 7 consecutive odd numbers is 35. Largest number?

A. 43

B. 41

C. 39

D. 37

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Correct Answer: Option B

Explanation:
Middle=35. Largest=35+6=41.

This question belongs to: Maths Average

Question #2

Average of 10 numbers 730. If average of 6 is 725, average of remaining 4?

A. 737.5

B. 740

C. 735

D. 736

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Correct Answer: Option A

Explanation:
Sum10=7300. Sum6=4350. Remaining=2950. Average=737.5.

This question belongs to: Maths Average

Question #3

The average of first 15 multiples of 4 is

A. 34

B. 28

C. 30

D. 32

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Correct Answer: Option D

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

This question belongs to: Maths Average

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