Average of 10 numbers 1530. If average of 6 is 1525, average of remaining 4? MCQ with Answer and Explanation

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Average of 10 numbers 1530. If average of 6 is 1525, average of remaining 4?

A. 1536

B. 1535

C. 1537.5

D. 1540

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum10=15300. Sum6=9150. Remaining=6150. Average=1537.5.

This question belongs to: Maths Average

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Question #1

The average of 3 numbers is 15. If each number is multiplied by 4, what is the new average?

A. 75

B. 45

C. 60

D. 30

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Correct Answer: Option C

Explanation:
New average =15×4=60.

This question belongs to: Maths Average

Question #2

The average weight of 8 persons increases by 2.5 kg when one person weighing 65 kg is replaced by a new person. What is the weight of the new person?

A. 90

B. 75

C. 85

D. 80

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Correct Answer: Option C

Explanation:
Increase in total weight = 8 × 2.5 = 20 kg. New person weight = 65 + 20 = 85 kg.

This question belongs to: Maths Average

Question #3

Average of 16 numbers 45. If average of 10 is 40, average of remaining 6?

A. 55

B. 52

C. 53.33

D. 50

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Correct Answer: Option C

Explanation:
Sum16=720. Sum10=400. Remaining=320. Average≈53.33.

This question belongs to: Maths Average

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