Average of 10 numbers 2130. If average of 6 is 2125, average of remaining 4? MCQ with Answer and Explanation

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Average of 10 numbers 2130. If average of 6 is 2125, average of remaining 4?

A. 2137.5

B. 2136

C. 2135

D. 2140

Answer: Option A

Solution (By JKExamLibrary)

Sum10=21300. Sum6=12750. Remaining=8550. Average=2137.5.

This question belongs to: Maths Average

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Question #1 Report Error

The average score of 40 matches is 50. If average of first 20 is 45, average of last 20?

A. 55

B. 50

C. 52

D. 48

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Correct Answer: Option A

Explanation:
Total=2000. First=900. Last=1100. Average=55.

This question belongs to: Maths Average

Question #2 Report Error

Average of 12 numbers 220. If average of 8 is 215, average of remaining 4?

A. 228

B. 225

C. 230

D. 232

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Correct Answer: Option C

Explanation:
Sum12=2640. Sum8=1720. Remaining=920. Average=230.

This question belongs to: Maths Average

Question #3 Report Error

The average of 5 numbers is 40. If each number is decreased by 5, what is the new average?

A. 40

B. 35

C. 30

D. 45

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Correct Answer: Option B

Explanation:
If each number is decreased by a constant, the average also decreases by that constant. New average =40-5=35.

This question belongs to: Maths Average

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