The average of 4 numbers is 15. If one of the numbers is 10, what is the average of the remaining three? MCQ with Answer and Explanation

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The average of 4 numbers is 15. If one of the numbers is 10, what is the average of the remaining three?

A. 16.67

B. 18

C. 17

D. 16

Answer: Option A

Solution (By JKSSB Mock Tests)

Total sum = 4 × 15 = 60. Sum of remaining three = 60 - 10 = 50. Average = 50 / 3 ≈ 16.67.

This question belongs to: Maths Average

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Question #1

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Average of 10 numbers 1430. If average of 6 is 1425, average of remaining 4?

A. 1440

B. 1437.5

C. 1435

D. 1436

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Correct Answer: Option B

Explanation:
Sum10=14300. Sum6=8550. Remaining=5750. Average=1437.5.

This question belongs to: Maths Average

Question #2

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The average of 4 numbers is 16. If one number is 24, find the average of the other three.

A. 13.33

B. 13

C. 12

D. 14

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Correct Answer: Option A

Explanation:
Sum=4×16=64. Other sum=64-24=40. Avg=40/3=13.33.

This question belongs to: Maths Average

Question #3

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The average of 6 numbers is 25. If each number is increased by 8, what is the new average?

A. 17

B. 25

C. 33

D. 41

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Correct Answer: Option C

Explanation:
New average =25+8=33.

This question belongs to: Maths Average

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