The average of 6 numbers is 21. If one number is 15, find the average of the remaining 5. MCQ with Answer and Explanation

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The average of 6 numbers is 21. If one number is 15, find the average of the remaining 5.

A. 21.4

B. 22

C. 22.2

D. 21.6

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum=6×21=126. Remaining sum=126-15=111. Avg=111/5=22.2.

This question belongs to: Maths Average

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Question #1

Average of 12 numbers 1120. If average of 8 is 1115, average of remaining 4?

A. 1132

B. 1130

C. 1125

D. 1128

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Correct Answer: Option B

Explanation:
Sum12=13440. Sum8=8920. Remaining=4520. Average=1130.

This question belongs to: Maths Average

Question #2

Average of 15 numbers 960. If average of 9 is 955, average of remaining 6?

A. 965

B. 968

C. 967.5

D. 970

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Correct Answer: Option C

Explanation:
Sum15=14400. Sum9=8595. Remaining=5805. Average=967.5.

This question belongs to: Maths Average

Question #3

Average of 40 numbers 55. If 10 numbers average 65, average of remaining 30?

A. 52

B. 50

C. 53

D. 51.67

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Correct Answer: Option D

Explanation:
Total=2200. 10=650. Remaining=1550/30≈51.67.

This question belongs to: Maths Average

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