Average of 12 numbers 50. If average of 7 is 45, average of remaining 5? MCQ with Answer and Explanation

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Average of 12 numbers 50. If average of 7 is 45, average of remaining 5?

A. 57

B. 60

C. 58

D. 55

Answer: Option A

Solution (By JKExamLibrary)

Sum12=600. Sum7=315. Remaining=285. Average=57.

This question belongs to: Maths Average

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Question #1 Report Error

The average of 75,85,95 is

A. 82

B. 85

C. 90

D. 80

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Correct Answer: Option B

Explanation:
255/3=85.

This question belongs to: Maths Average

Question #2 Report Error

The average of 5 numbers is 18. If one number is 25 and another is 15, find the average of the remaining 3 numbers.

A. 18

B. 16.67

C. 16

D. 17

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Correct Answer: Option B

Explanation:
Sum=5×18=90. Sum of two=25+15=40. Sum of three=50. Average=50/3=16.67.

This question belongs to: Maths Average

Question #3 Report Error

Average of 30 numbers 25. If each number is increased by 10%, new average?

A. 30

B. 25

C. 26

D. 27.5

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Correct Answer: Option D

Explanation:
Increased by 10%, average 27.5.

This question belongs to: Maths Average

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