Average of 8 numbers 1150. If average of 5 is 1145, average of remaining 3? MCQ with Answer and Explanation

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Average of 8 numbers 1150. If average of 5 is 1145, average of remaining 3?

A. 1160

B. 1157

C. 1158.33

D. 1155

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum8=9200. Sum5=5725. Remaining=3475. Average≈1158.33.

This question belongs to: Maths Average

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Question #1

Average of 15 numbers 1210. If average of 9 is 1205, average of remaining 6?

A. 1215

B. 1217.5

C. 1218

D. 1220

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Correct Answer: Option B

Explanation:
Sum15=18150. Sum9=10845. Remaining=7305. Average=1217.5.

This question belongs to: Maths Average

Question #2

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

A. 46

B. 45

C. 44

D. 48

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Correct Answer: Option A

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

This question belongs to: Maths Average

Question #3

Average of all multiples of 10 from 10 to 100 is

A. 45

B. 60

C. 50

D. 55

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Correct Answer: Option D

Explanation:
10 numbers. Average=(10+100)/2=55.

This question belongs to: Maths Average

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