The average of 12,18,24,30 is MCQ with Answer and Explanation

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The average of 12,18,24,30 is

A. 22

B. 20

C. 24

D. 21

Answer: Option D

Solution (By JKExamLibrary)

Sum=84. Average=21.

This question belongs to: Maths Average

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Question #1

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If average of 9, 12, 15, x is 13, x is

A. 17

B. 14

C. 16

D. 15

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Correct Answer: Option C

Explanation:
Sum=52. 9+12+15+x=52. x=16.

This question belongs to: Maths Average

Question #2

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Average of 12 numbers 1970. If average of 8 is 1965, average of remaining 4?

A. 1980

B. 1978

C. 1982

D. 1975

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Correct Answer: Option A

Explanation:
Sum12=23640. Sum8=15720. Remaining=7920. Average=1980.

This question belongs to: Maths Average

Question #3

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If average of 4 numbers is 25 and three numbers 20,25,35, fourth?

A. 20

B. 25

C. 30

D. 15

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Correct Answer: Option A

Explanation:
Fourth=100 -80=20.

This question belongs to: Maths Average

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