The average of 4 numbers is 25. If each number is multiplied by 3, what is the new average? MCQ with Answer and Explanation

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The average of 4 numbers is 25. If each number is multiplied by 3, what is the new average?

A. 25

B. 75

C. 50

D. 100

Answer: Option B

Solution (By JKSSB Mock Tests)

If each number is multiplied by a constant, the average also gets multiplied by that constant. New average = 25×3=75.

This question belongs to: Maths Average

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Question #1

Average of 12 numbers 2070. If average of 8 is 2065, average of remaining 4?

A. 2080

B. 2078

C. 2082

D. 2075

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Correct Answer: Option A

Explanation:
Sum12=24840. Sum8=16520. Remaining=8320. Average=2080.

This question belongs to: Maths Average

Question #2

Average of 8 numbers 2350. If average of 5 is 2345, average of remaining 3?

A. 2357

B. 2355

C. 2360

D. 2358.33

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Correct Answer: Option D

Explanation:
Sum8=18800. Sum5=11725. Remaining=7075. Average≈2358.33.

This question belongs to: Maths Average

Question #3

Average of all three digit numbers is

A. 600

B. 550

C. 549.5

D. 500

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Correct Answer: Option C

Explanation:
(100+999)/2=549.5.

This question belongs to: Maths Average

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