Average age of 40 people 35 years. If 10 more with average 40 join, new average? MCQ with Answer and Explanation

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Average age of 40 people 35 years. If 10 more with average 40 join, new average?

A. 37

B. 36

C. 35.5

D. 36.25

Answer: Option B

Solution (By JKSSB Mock Tests)

Total=1400+400=1800. /50=36.

This question belongs to: Maths Average

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Question #1

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Average of 50 numbers 45. If 10 numbers average 55 removed, new average of 40?

A. 40

B. 41

C. 42.5

D. 43

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Correct Answer: Option C

Explanation:
Total=2250. Removed=550. Remaining=1700/40=42.5.

This question belongs to: Maths Average

Question #2

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Average of 855,1140,1425 is

A. 1135

B. 1150

C. 1140

D. 1130

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Correct Answer: Option C

Explanation:
3420/3=1140.

This question belongs to: Maths Average

Question #3

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Average of 12 numbers 1970. If average of 8 is 1965, average of remaining 4?

A. 1978

B. 1982

C. 1975

D. 1980

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Correct Answer: Option D

Explanation:
Sum12=23640. Sum8=15720. Remaining=7920. Average=1980.

This question belongs to: Maths Average

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