Average of 15 numbers 560. If average of 9 is 555, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 560. If average of 9 is 555, average of remaining 6?

A. 565

B. 568

C. 570

D. 567.5

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum15=8400. Sum9=4995. Remaining=3405. Average=567.5.

This question belongs to: Maths Average

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Question #1

Average of 735,980,1225 is

A. 980

B. 970

C. 975

D. 990

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Correct Answer: Option A

Explanation:
2940/3=980.

This question belongs to: Maths Average

Question #2

If average of a and b is 10, b and c is 15, c and a is 20, average of a,b,c is

A. 15

B. 13

C. 14

D. 16

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Correct Answer: Option A

Explanation:
Adding all: 2(a+b+c)=90, a+b+c=45. Average=15.

This question belongs to: Maths Average

Question #3

Average of numbers from 25 to 50 is

A. 36.5

B. 37.5

C. 37

D. 38

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Correct Answer: Option B

Explanation:
(25+50)/2=37.5.

This question belongs to: Maths Average

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