Average of 9 numbers 2590. If average of 6 is 2585, average of remaining 3? MCQ with Answer and Explanation

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Average of 9 numbers 2590. If average of 6 is 2585, average of remaining 3?

A. 2605

B. 2598

C. 2595

D. 2600

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum9=23310. Sum6=15510. Remaining=7800. Average=2600.

This question belongs to: Maths Average

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Question #1

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The average of 5 numbers is 31. If each number is multiplied by 2 and then 4 is added, what is the new average?

A. 68

B. 62

C. 64

D. 66

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Correct Answer: Option D

Explanation:
New average = (31×2)+4 =62+4=66.

This question belongs to: Maths Average

Question #2

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The average of 24,36,48,60 is

A. 45

B. 39

C. 40

D. 42

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Correct Answer: Option D

Explanation:
168/4=42.

This question belongs to: Maths Average

Question #3

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If the average of 5 numbers is 60 and the average of first two is 55, average of last two is 65, then the middle number is

A. 70

B. 60

C. 55

D. 65

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Correct Answer: Option B

Explanation:
Sum5=300. Sum first2=110. Sum last2=130. Middle=300-240=60.

This question belongs to: Maths Average

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