If average of 20 numbers is 50 and 25 is added to each, new average is MCQ with Answer and Explanation

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If average of 20 numbers is 50 and 25 is added to each, new average is

A. 50

B. 55

C. 60

D. 75

Answer: Option D

Solution (By JKSSB Mock Tests)

New average =50 +25=75.

This question belongs to: Maths Average

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Question #1

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Average of 7 numbers 50. If average of 4 is 45, average of remaining 3?

A. 57.67

B. 60

C. 58

D. 55

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Correct Answer: Option A

Explanation:
Sum7=350. Sum4=180. Remaining=170. Average≈56.67 approx 57.

This question belongs to: Maths Average

Question #2

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The average of 4 numbers is 24. If each number is multiplied by 4, what is the new average?

A. 48

B. 96

C. 24

D. 72

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Correct Answer: Option B

Explanation:
New average =24×4=96.

This question belongs to: Maths Average

Question #3

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Average of 20 numbers 90. If average of 12 is 85, average of remaining 8?

A. 96

B. 100

C. 97.5

D. 95

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Correct Answer: Option C

Explanation:
Sum20=1800. Sum12=1020. Remaining=780. Average=97.5.

This question belongs to: Maths Average

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