Average of 4 numbers a,b,c,d is 20. If a=15, b=25, average of c,d? MCQ with Answer and Explanation

Average of 4 numbers a,b,c,d is 20. If a=15, b=25, average of c,d?

A. 20

B. 22.5

C. 18

D. 25

Answer: Option A

c+d=80 -40=40. Average=20.

This question belongs to: Maths Average

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Question #1 Report Error

Average of 8 numbers 28. If average of 5 is 25, average of remaining 3?

A. 35

B. 32

C. 30

D. 33.33

Correct Answer: Option D

Explanation:
Sum8=224. Sum5=125. Remaining=99. Average=33.

This question belongs to: Maths Average

Question #2 Report Error

Average of 12 numbers 1770. If average of 8 is 1765, average of remaining 4?

A. 1778

B. 1775

C. 1780

D. 1782

Correct Answer: Option C

Explanation:
Sum12=21240. Sum8=14120. Remaining=7120. Average=1780.

This question belongs to: Maths Average

Question #3 Report Error

Average of 40 numbers 35. If 10 numbers average 40 added, new average?

A. 35

B. 36.25

C. 37

D. 36

Correct Answer: Option D

Explanation:
Total40=1400. Added=400. Total1800/50=36.

This question belongs to: Maths Average