The average of 9 numbers is 50. If one number is 70, find the average of the remaining 8. MCQ with Answer and Explanation

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The average of 9 numbers is 50. If one number is 70, find the average of the remaining 8.

A. 47.5

B. 46.5

C. 47

D. 48

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum=9×50=450. Remaining sum=450-70=380. Avg=380/8=47.5.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1

Average of 8 numbers 2250. If average of 5 is 2245, average of remaining 3?

A. 2258.33

B. 2255

C. 2260

D. 2257

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Correct Answer: Option A

Explanation:
Sum8=18000. Sum5=11225. Remaining=6775. Average≈2258.33.

This question belongs to: Maths Average

Question #2

Average of 20 numbers is 45. Later two numbers 30 and 50 replaced by 40 and 60, new average?

A. 47

B. 44

C. 46

D. 45

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Correct Answer: Option C

Explanation:
Net change +20. Increase 1. New average=46.

This question belongs to: Maths Average

Question #3

Average of 8 numbers 750. If average of 5 is 745, average of remaining 3?

A. 760

B. 758.33

C. 757

D. 755

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Correct Answer: Option B

Explanation:
Sum8=6000. Sum5=3725. Remaining=2275. Average≈758.33.

This question belongs to: Maths Average

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