Average of 8 numbers 22. If 4 numbers average 20, other 4 average? MCQ with Answer and Explanation

Average of 8 numbers 22. If 4 numbers average 20, other 4 average?

A. 24

B. 26

C. 22

D. 23

Answer: Option A

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

This question belongs to: Maths Average

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Question #1 Report Error

Average of 15 numbers 2410. If average of 9 is 2405, average of remaining 6?

A. 2418

B. 2415

C. 2417.5

D. 2420

Correct Answer: Option C

Explanation:
Sum15=36150. Sum9=21645. Remaining=14505. Average=2417.5.

This question belongs to: Maths Average

Question #2 Report Error

Average of 12 numbers 1570. If average of 8 is 1565, average of remaining 4?

A. 1580

B. 1578

C. 1575

D. 1582

Correct Answer: Option A

Explanation:
Sum12=18840. Sum8=12520. Remaining=6320. Average=1580.

This question belongs to: Maths Average

Question #3 Report Error

The average of 5 numbers is 28. If one number is excluded, the average becomes 25. What is the excluded number?

A. 30

B. 40

C. 35

D. 45

Correct Answer: Option B

Explanation:
Sum of 5 numbers = 5 × 28 = 140. Sum of remaining 4 numbers = 4 × 25 = 100. Excluded number = 140 - 100 = 40.

This question belongs to: Maths Average