Average of 10 numbers 1130. If average of 6 is 1125, average of remaining 4? MCQ with Answer and Explanation

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Average of 10 numbers 1130. If average of 6 is 1125, average of remaining 4?

A. 1135

B. 1137.5

C. 1140

D. 1136

Answer: Option B

Solution (By JKExamLibrary)

Sum10=11300. Sum6=6750. Remaining=4550. Average=1137.5.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1 Report Error

A person covers 2/3 distance at 30 km/h and 1/3 at 60 km/h. Average speed?

A. 36 km/h

B. 45 km/h

C. 35 km/h

D. 40 km/h

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Correct Answer: Option A

Explanation:
Let distance 3d. Time = (2d/30) + (d/60) = (4d + d)/60 =5d/60. Average =3d / (5d/60) =36.

This question belongs to: Maths Average

Question #2 Report Error

The average of 50 numbers is 38. If 48 is replaced by 78, new average?

A. 39

B. 38

C. 38.6

D. 37

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Correct Answer: Option C

Explanation:
Change +30, increase 30/50=0.6. New=38.6.

This question belongs to: Maths Average

Question #3 Report Error

Average of 12 numbers 970. If average of 8 is 965, average of remaining 4?

A. 978

B. 975

C. 980

D. 982

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Correct Answer: Option C

Explanation:
Sum12=11640. Sum8=7720. Remaining=3920. Average=980.

This question belongs to: Maths Average

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