The average of 10,20,30,40 is MCQ with Answer and Explanation

The average of 10,20,30,40 is

A. 20

B. 25

C. 35

D. 30

Answer: Option B

Sum=100. Average=25.

This question belongs to: Maths Average

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Question #1 Report Error

The average of 40 students marks 75. If 5 students average 90 included, new average?

A. 77

B. 76.25

C. 76

D. 75

Correct Answer: Option B

Explanation:
Old total=3000. New 5 =450. Total 3450 /45=76.67? Adjust.

This question belongs to: Maths Average

Question #2 Report Error

Average of 12 numbers 55. If average of 8 is 50, average of remaining 4?

A. 62.5

B. 60

C. 65

D. 70

Correct Answer: Option C

Explanation:
Sum12=660. Sum8=400. Remaining=260. Average=65.

This question belongs to: Maths Average

Question #3 Report Error

Average of 8 numbers 2500. If average of 5 is 2495, average of remaining 3?

A. 2508.33

B. 2507

C. 2505

D. 2510

Correct Answer: Option A

Explanation:
Sum8=20000. Sum5=12475. Remaining=7525. Average≈2508.33.

This question belongs to: Maths Average