Average of 8 numbers 800. If average of 5 is 795, average of remaining 3? MCQ with Answer and Explanation

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Average of 8 numbers 800. If average of 5 is 795, average of remaining 3?

A. 807

B. 808.33

C. 810

D. 805

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum8=6400. Sum5=3975. Remaining=2425. Average≈808.33.

This question belongs to: Maths Average

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Question #1

Average of 12 numbers 1320. If average of 8 is 1315, average of remaining 4?

A. 1328

B. 1325

C. 1330

D. 1332

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Correct Answer: Option C

Explanation:
Sum12=15840. Sum8=10520. Remaining=5320. Average=1330.

This question belongs to: Maths Average

Question #2

The average of 5 numbers is 31. If each number is multiplied by 2 and then 4 is added, what is the new average?

A. 64

B. 62

C. 66

D. 68

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Correct Answer: Option C

Explanation:
New average = (31×2)+4 =62+4=66.

This question belongs to: Maths Average

Question #3

Average of 12 numbers 1170. If average of 8 is 1165, average of remaining 4?

A. 1182

B. 1180

C. 1178

D. 1175

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Correct Answer: Option B

Explanation:
Sum12=14040. Sum8=9320. Remaining=4720. Average=1180.

This question belongs to: Maths Average

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