Average of 40,60,80,100 is MCQ with Answer and Explanation

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Average of 40,60,80,100 is

A. 75

B. 65

C. 70

D. 72

Answer: Option C

Solution (By JKExamLibrary)

280/4=70.

This question belongs to: Maths Average

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Question #1

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Average of first 10 multiples of 9 is

A. 50

B. 54.5

C. 45

D. 49.5

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Correct Answer: Option D

Explanation:
9*(1+10)/2 =9*5.5=49.5.

This question belongs to: Maths Average

Question #2

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The average of 75,85,95 is

A. 82

B. 80

C. 90

D. 85

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Correct Answer: Option D

Explanation:
255/3=85.

This question belongs to: Maths Average

Question #3

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Average age of 40 people 35 years. If 10 more with average 40 join, new average?

A. 35.5

B. 36.25

C. 37

D. 36

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Correct Answer: Option D

Explanation:
Total=1400+400=1800. /50=36.

This question belongs to: Maths Average

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