Average of 25 numbers 80. If average of 10 is 85, average of remaining 15? MCQ with Answer and Explanation

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Average of 25 numbers 80. If average of 10 is 85, average of remaining 15?

A. 76.67

B. 78

C. 75

D. 77

Answer: Option A

Solution (By JKSSB Mock Tests)

Total=2000. Sum10=850. Remaining=1150/15≈76.67.

This question belongs to: Maths Average

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Question #1

Average of 10 numbers 880. If average of 6 is 875, average of remaining 4?

A. 887.5

B. 886

C. 890

D. 885

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Correct Answer: Option A

Explanation:
Sum10=8800. Sum6=5250. Remaining=3550. Average=887.5.

This question belongs to: Maths Average

Question #2

Average of 12 numbers 1970. If average of 8 is 1965, average of remaining 4?

A. 1980

B. 1975

C. 1978

D. 1982

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Correct Answer: Option A

Explanation:
Sum12=23640. Sum8=15720. Remaining=7920. Average=1980.

This question belongs to: Maths Average

Question #3

Average of 10 numbers 430. If average of 6 is 425, average of remaining 4?

A. 435

B. 436

C. 440

D. 437.5

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Correct Answer: Option D

Explanation:
Sum10=4300. Sum6=2550. Remaining=1750. Average=437.5.

This question belongs to: Maths Average

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