Average of 12 numbers 1670. If average of 8 is 1665, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 1670. If average of 8 is 1665, average of remaining 4?

A. 1680

B. 1678

C. 1675

D. 1682

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum12=20040. Sum8=13320. Remaining=6720. Average=1680.

This question belongs to: Maths Average

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Question #1

Average of 8 numbers 2450. If average of 5 is 2445, average of remaining 3?

A. 2458.33

B. 2455

C. 2457

D. 2460

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Correct Answer: Option A

Explanation:
Sum8=19600. Sum5=12225. Remaining=7375. Average≈2458.33.

This question belongs to: Maths Average

Question #2

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

A. 48

B. 44

C. 46

D. 45

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Correct Answer: Option C

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

This question belongs to: Maths Average

Question #3

The average of 8 numbers is 35. If each number is multiplied by 2, what is the new average?

A. 35

B. 70

C. 105

D. 17.5

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Correct Answer: Option B

Explanation:
New average = 35×2=70.

This question belongs to: Maths Average

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