Average of 12 numbers 1870. If average of 8 is 1865, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 1870. If average of 8 is 1865, average of remaining 4?

A. 1882

B. 1875

C. 1878

D. 1880

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum12=22440. Sum8=14920. Remaining=7520. Average=1880.

This question belongs to: Maths Average

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Question #1

Average of 15 numbers 1610. If average of 9 is 1605, average of remaining 6?

A. 1620

B. 1618

C. 1617.5

D. 1615

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Correct Answer: Option C

Explanation:
Sum15=24150. Sum9=14445. Remaining=9705. Average=1617.5.

This question belongs to: Maths Average

Question #2

Average of 915,1220,1525 is

A. 1220

B. 1210

C. 1230

D. 1215

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Correct Answer: Option A

Explanation:
3660/3=1220.

This question belongs to: Maths Average

Question #3

Average of 10,15,20,25,30,35,40 is

A. 24

B. 22.5

C. 26

D. 25

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Correct Answer: Option D

Explanation:
Sum=175. Average=25.

This question belongs to: Maths Average

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