The average of 4 numbers is 18. If each number is decreased by 6, what is the new average? MCQ with Answer and Explanation

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The average of 4 numbers is 18. If each number is decreased by 6, what is the new average?

A. 12

B. 18

C. 24

D. 6

Answer: Option A

Solution (By JKSSB Mock Tests)

New average =18-6=12.

This question belongs to: Maths Average

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Question #1

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Average of 15 numbers 1610. If average of 9 is 1605, average of remaining 6?

A. 1620

B. 1618

C. 1617.5

D. 1615

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Correct Answer: Option C

Explanation:
Sum15=24150. Sum9=14445. Remaining=9705. Average=1617.5.

This question belongs to: Maths Average

Question #2

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Average of 9 numbers 940. If average of 6 is 935, average of remaining 3?

A. 955

B. 948

C. 945

D. 950

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Correct Answer: Option D

Explanation:
Sum9=8460. Sum6=5610. Remaining=2850. Average=950.

This question belongs to: Maths Average

Question #3

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Average of 10 numbers 1180. If average of 6 is 1175, average of remaining 4?

A. 1185

B. 1187.5

C. 1186

D. 1190

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Correct Answer: Option B

Explanation:
Sum10=11800. Sum6=7050. Remaining=4750. Average=1187.5.

This question belongs to: Maths Average

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