Average of 20 numbers 90. If average of 12 is 85, average of remaining 8? MCQ with Answer and Explanation

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Average of 20 numbers 90. If average of 12 is 85, average of remaining 8?

A. 97.5

B. 96

C. 100

D. 95

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum20=1800. Sum12=1020. Remaining=780. Average=97.5.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1

Find the average of the first 5 composite numbers.

A. 6.8

B. 7.4

C. 7.6

D. 8

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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 14 numbers 40. If average of 8 is 36, average of remaining 6?

A. 44

B. 46

C. 48

D. 45

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Correct Answer: Option B

Explanation:
Sum14=560. Sum8=288. Remaining=272. Average≈45.33 approx 46.

This question belongs to: Maths Average

Question #3

Average of 10 numbers 1930. If average of 6 is 1925, average of remaining 4?

A. 1940

B. 1937.5

C. 1935

D. 1936

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Correct Answer: Option B

Explanation:
Sum10=19300. Sum6=11550. Remaining=7750. Average=1937.5.

This question belongs to: Maths Average

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