Average of 30 numbers 42. If average of 20 is 40, average of remaining 10? MCQ with Answer and Explanation

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Average of 30 numbers 42. If average of 20 is 40, average of remaining 10?

A. 45

B. 48

C. 46

D. 44

Answer: Option C

Solution (By JKExamLibrary)

Total=1260. Sum20=800. Remaining=460. Average=46.

This question belongs to: Maths Average

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Question #1 Report Error

The average of 35,42,49,56 is

A. 45.5

B. 44

C. 47

D. 46

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Correct Answer: Option A

Explanation:
Sum=182. Average=45.5.

This question belongs to: Maths Average

Question #2 Report Error

Average of 15 numbers 1410. If average of 9 is 1405, average of remaining 6?

A. 1417.5

B. 1415

C. 1418

D. 1420

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Correct Answer: Option A

Explanation:
Sum15=21150. Sum9=12645. Remaining=8505. Average=1417.5.

This question belongs to: Maths Average

Question #3 Report Error

Average of 8 numbers 1900. If average of 5 is 1895, average of remaining 3?

A. 1905

B. 1908.33

C. 1910

D. 1907

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Correct Answer: Option B

Explanation:
Sum8=15200. Sum5=9475. Remaining=5725. Average≈1908.33.

This question belongs to: Maths Average

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