Average of 25 numbers 42. If one number 60 replaced by 30, new average? MCQ with Answer and Explanation

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Average of 25 numbers 42. If one number 60 replaced by 30, new average?

A. 42

B. 43

C. 40

D. 41

Answer: Option D

Solution (By JKSSB Mock Tests)

Change -30, decrease 1.2, new 40.8 approx 41.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1

Average of 12 numbers 470. If average of 8 is 465, average of remaining 4?

A. 478

B. 480

C. 482

D. 475

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Correct Answer: Option B

Explanation:
Sum12=5640. Sum8=3720. Remaining=1920. Average=480.

This question belongs to: Maths Average

Question #2

Average of 10 numbers 2180. If average of 6 is 2175, average of remaining 4?

A. 2187.5

B. 2190

C. 2185

D. 2186

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Correct Answer: Option A

Explanation:
Sum10=21800. Sum6=13050. Remaining=8750. Average=2187.5.

This question belongs to: Maths Average

Question #3

Average of 10 numbers 980. If average of 6 is 975, average of remaining 4?

A. 986

B. 985

C. 990

D. 987.5

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Correct Answer: Option D

Explanation:
Sum10=9800. Sum6=5850. Remaining=3950. Average=987.5.

This question belongs to: Maths Average

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