Average of 20 numbers 45. If 5 numbers average 50 included, new average of 25? MCQ with Answer and Explanation

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Average of 20 numbers 45. If 5 numbers average 50 included, new average of 25?

A. 45.5

B. 44

C. 47

D. 46

Answer: Option D

Solution (By JKExamLibrary)

Total20=900. Added=250. Total1150/25=46.

This question belongs to: Maths Average

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Question #1

Average of 10 numbers 2780. If average of 6 is 2775, average of remaining 4?

A. 2786

B. 2787.5

C. 2785

D. 2790

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Correct Answer: Option B

Explanation:
Sum10=27800. Sum6=16650. Remaining=11150. Average=2787.5.

This question belongs to: Maths Average

Question #2

Average of 1 to 100 except 50 is

A. 50.5

B. 49.5

C. 51

D. 50

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Correct Answer: Option A

Explanation:
Sum1-100=5050. Minus 50=5000. /99≈50.505.

This question belongs to: Maths Average

Question #3

The average of 3 numbers is 22. If the numbers are in the ratio 2:3:6, find the largest.

A. 30

B. 36

C. 42

D. 24

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Correct Answer: Option B

Explanation:
Sum=3×22=66. Ratio sum=2+3+6=11. Largest = (6/11)×66=36.

This question belongs to: Maths Average

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