Average of 12 numbers 420. If average of 8 is 415, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 420. If average of 8 is 415, average of remaining 4?

A. 428

B. 430

C. 425

D. 432

Answer: Option B

Solution (By JKExamLibrary)

Sum12=5040. Sum8=3320. Remaining=1720. Average=430.

This question belongs to: Maths Average

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Question #1 Report Error

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

A. 480

B. 482

C. 478

D. 475

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Correct Answer: Option A

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

This question belongs to: Maths Average

Question #2 Report Error

Average of 12 numbers 2420. If average of 8 is 2415, average of remaining 4?

A. 2425

B. 2432

C. 2428

D. 2430

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Correct Answer: Option D

Explanation:
Sum12=29040. Sum8=19320. Remaining=9720. Average=2430.

This question belongs to: Maths Average

Question #3 Report Error

Average weight of 20 girls 45 kg. If 5 boys average 55 kg included, new average for 25?

A. 48

B. 50

C. 46

D. 47

View Answer & Solution Discuss

Correct Answer: Option D

Explanation:
Girls 900. Boys 275. Total 1175/25=47.

This question belongs to: Maths Average

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