Average of 40 numbers 30. If 10 numbers average 40, average of remaining 30? MCQ with Answer and Explanation

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Average of 40 numbers 30. If 10 numbers average 40, average of remaining 30?

A. 25

B. 26.67

C. 28

D. 27

Answer: Option B

Solution (By JKSSB Mock Tests)

Total=1200. 10=400. Remaining=800/30≈26.67.

This question belongs to: Maths Average

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Question #1

Average of 10 numbers 1680. If average of 6 is 1675, average of remaining 4?

A. 1685

B. 1687.5

C. 1690

D. 1686

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Correct Answer: Option B

Explanation:
Sum10=16800. Sum6=10050. Remaining=6750. Average=1687.5.

This question belongs to: Maths Average

Question #2

The average of 4 numbers is 22. If each number is increased by 3, what is the new average?

A. 22

B. 19

C. 28

D. 25

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Correct Answer: Option D

Explanation:
New average =22+3=25.

This question belongs to: Maths Average

Question #3

Average of 5 numbers 48. If average of 2 is 40, average of remaining 3?

A. 50

B. 55

C. 52

D. 53.33

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Correct Answer: Option D

Explanation:
Sum5=240. Sum2=80. Remaining=160. Average≈53.33.

This question belongs to: Maths Average

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