Average of 10 numbers 980. If average of 6 is 975, average of remaining 4? MCQ with Answer and Explanation

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Average of 10 numbers 980. If average of 6 is 975, average of remaining 4?

A. 986

B. 987.5

C. 985

D. 990

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum10=9800. Sum6=5850. Remaining=3950. Average=987.5.

This question belongs to: Maths Average

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Question #1

The average of 810,1080,1350 is

A. 1075

B. 1090

C. 1070

D. 1080

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Correct Answer: Option D

Explanation:
3240/3=1080.

This question belongs to: Maths Average

Question #2

Average of 12 numbers 2220. If average of 8 is 2215, average of remaining 4?

A. 2225

B. 2228

C. 2232

D. 2230

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Correct Answer: Option D

Explanation:
Sum12=26640. Sum8=17720. Remaining=8920. Average=2230.

This question belongs to: Maths Average

Question #3

Average of 15 numbers 2710. If average of 9 is 2705, average of remaining 6?

A. 2717.5

B. 2718

C. 2720

D. 2715

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Correct Answer: Option A

Explanation:
Sum15=40650. Sum9=24345. Remaining=16305. Average=2717.5.

This question belongs to: Maths Average

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