Average of 15 numbers 1810. If average of 9 is 1805, average of remaining 6? MCQ with Answer and Explanation

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Average of 15 numbers 1810. If average of 9 is 1805, average of remaining 6?

A. 1817.5

B. 1820

C. 1818

D. 1815

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum15=27150. Sum9=16245. Remaining=10905. Average=1817.5.

This question belongs to: Maths Average

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Question #1

The average of 12,18,24,30 is

A. 24

B. 21

C. 20

D. 22

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Correct Answer: Option B

Explanation:
Sum=84. Average=21.

This question belongs to: Maths Average

Question #2

Find average of 11,22,33,...,99.

A. 60

B. 55

C. 50

D. 45

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Correct Answer: Option B

Explanation:
11 times (1 to 9). Average 11×5=55.

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Question #3

The average of 10, 20, 30 is 20, average of 30,40,50 is 40, average of 10,20,30,40,50 is

A. 28

B. 32

C. 35

D. 30

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Correct Answer: Option D

Explanation:
Sum=150. Average=30.

This question belongs to: Maths Average

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