The average of 4 numbers is 30. If each number is divided by 3, what is the new average? MCQ with Answer and Explanation

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The average of 4 numbers is 30. If each number is divided by 3, what is the new average?

A. 9

B. 11

C. 12

D. 10

Answer: Option D

Solution (By JKSSB Mock Tests)

New average =30/3=10.

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. 55

D. 58

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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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Average of 9 numbers 1090. If average of 6 is 1085, average of remaining 3?

A. 1098

B. 1100

C. 1095

D. 1105

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Correct Answer: Option B

Explanation:
Sum9=9810. Sum6=6510. Remaining=3300. Average=1100.

This question belongs to: Maths Average

Question #3

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Average of 12 numbers 1870. If average of 8 is 1865, average of remaining 4?

A. 1880

B. 1875

C. 1882

D. 1878

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Correct Answer: Option A

Explanation:
Sum12=22440. Sum8=14920. Remaining=7520. Average=1880.

This question belongs to: Maths Average

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