If the average of 8 numbers is 22 and average of 4 is 20, average of other 4 is MCQ with Answer and Explanation

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If the average of 8 numbers is 22 and average of 4 is 20, average of other 4 is

A. 24

B. 26

C. 22

D. 23

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum8=176. Sum4=80. Other sum=96. Average=24.

This question belongs to: Maths Average

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Question #1

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The average of 4 numbers is 18. If each number is decreased by 6, what is the new average?

A. 24

B. 6

C. 12

D. 18

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Correct Answer: Option C

Explanation:
New average =18-6=12.

This question belongs to: Maths Average

Question #2

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The average monthly income of a person for 12 months is ₹30,000. If he earned ₹36,000 in one month, the average income for the remaining 11 months is:

A. ₹31,000

B. ₹29,454.55

C. ₹29,000

D. ₹30,000

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Correct Answer: Option B

Explanation:
Total income = 12×30000 = 360000. Remaining income = 360000−36000 = 324000. Average = 324000/11 = 29454.55.

This question belongs to: Maths Average

Question #3

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The average age of 25 persons is 36. If 5 persons with average 40 leave, new average?

A. 36

B. 35

C. 34

D. 37

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Correct Answer: Option B

Explanation:
Total=900. Leave=200. Remaining 700/20=35.

This question belongs to: Maths Average

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