The average of 4 numbers is 19. If each number is multiplied by 3 and then 2 is added, what is the new average? MCQ with Answer and Explanation

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The average of 4 numbers is 19. If each number is multiplied by 3 and then 2 is added, what is the new average?

A. 61

B. 57

C. 59

D. 55

Answer: Option C

Solution (By JKSSB Mock Tests)

New average = (19×3)+2 =57+2=59.

This question belongs to: Maths Average

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Question #1

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Average of 16 numbers 25. If 4 numbers average 30, average of remaining 12?

A. 25

B. 23.33

C. 24

D. 22

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Correct Answer: Option B

Explanation:
Sum16=400. Sum4=120. Remaining=280/12≈23.33.

This question belongs to: Maths Average

Question #2

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Average of 10 numbers 1380. If average of 6 is 1375, average of remaining 4?

A. 1390

B. 1386

C. 1385

D. 1387.5

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Correct Answer: Option D

Explanation:
Sum10=13800. Sum6=8250. Remaining=5550. Average=1387.5.

This question belongs to: Maths Average

Question #3

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Average of 10 numbers 930. If average of 6 is 925, average of remaining 4?

A. 937.5

B. 940

C. 936

D. 935

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Correct Answer: Option A

Explanation:
Sum10=9300. Sum6=5550. Remaining=3750. Average=937.5.

This question belongs to: Maths Average

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