Average of 15 numbers 1610. If average of 9 is 1605, average of remaining 6? MCQ with Answer and Explanation

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

A. 1620

B. 1615

C. 1617.5

D. 1618

Answer: Option C

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Average

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Question #1

Average weight of 40 students 45 kg. If 10 more with average 50 kg join, new average?

A. 47

B. 46

C. 46.25

D. 45

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Correct Answer: Option B

Explanation:
Total old=1800. New=500. Total 2300 for 50. Average=46.

This question belongs to: Maths Average

Question #2

The average of 9 numbers is 25. If one number is 45, find the average of the remaining 8.

A. 22

B. 24

C. 23

D. 22.5

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Correct Answer: Option D

Explanation:
Sum=9×25=225. Remaining sum=225-45=180. Avg=180/8=22.5.

This question belongs to: Maths Average

Question #3

Average of 10 even numbers is 25. What is the largest if they are consecutive?

A. 34

B. 30

C. 32

D. 36

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Correct Answer: Option A

Explanation:
Average middle average of 5th and 6th. Largest =25 +9 =34.

This question belongs to: Maths Average

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