Average of 9 numbers 990. If average of 6 is 985, average of remaining 3? MCQ with Answer and Explanation

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Average of 9 numbers 990. If average of 6 is 985, average of remaining 3?

A. 1000

B. 1005

C. 995

D. 998

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum9=8910. Sum6=5910. Remaining=3000. Average=1000.

This question belongs to: Maths Average

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Question #1

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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. 57

B. 55

C. 61

D. 59

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Correct Answer: Option D

Explanation:
New average = (19×3)+2 =57+2=59.

This question belongs to: Maths Average

Question #2

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The average of 100 numbers is 50. The number 100 was misread as 10. Correct average?

A. 51

B. 49

C. 50

D. 50.9

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Correct Answer: Option D

Explanation:
Error -90. Increase 90/100=0.9. New=50.9.

This question belongs to: Maths Average

Question #3

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Average of 9 numbers 1590. If average of 6 is 1585, average of remaining 3?

A. 1598

B. 1595

C. 1605

D. 1600

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Correct Answer: Option D

Explanation:
Sum9=14310. Sum6=9510. Remaining=4800. Average=1600.

This question belongs to: Maths Average

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