The average of 45 numbers is 50. If 5 numbers average 60 are added, new average of 50 numbers? MCQ with Answer and Explanation

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The average of 45 numbers is 50. If 5 numbers average 60 are added, new average of 50 numbers?

A. 49

B. 52

C. 51

D. 50.5

Answer: Option C

Solution (By JKSSB Mock Tests)

Total45=2250. Added=300. Total2550/50=51.

This question belongs to: Maths Average

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Question #1

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

A. 24

B. 30

C. 42

D. 36

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Correct Answer: Option D

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

This question belongs to: Maths Average

Question #2

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Find the average of the first 7 natural numbers which are multiples of 2.

A. 8.5

B. 7

C. 9

D. 8

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Correct Answer: Option D

Explanation:
Multiples: 2,4,6,8,10,12,14 sum=56, count=7, avg=8.

This question belongs to: Maths Average

Question #3

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Average of 8 numbers 55. If average of 5 is 50, average of remaining 3?

A. 65

B. 60

C. 63.33

D. 62

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Correct Answer: Option C

Explanation:
Sum8=440. Sum5=250. Remaining=190. Average≈63.33.

This question belongs to: Maths Average

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