Average of 645,860,1075 is MCQ with Answer and Explanation

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Average of 645,860,1075 is

A. 855

B. 850

C. 860

D. 870

Answer: Option C

Solution (By JKSSB Mock Tests)

2580/3=860.

This question belongs to: Maths Average

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Question #1

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The average age of 30 boys is 14 years. If 2 more boys of age 15 and 16 join, new average?

A. 14.5

B. 14

C. 14.2

D. 14.125

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Correct Answer: Option D

Explanation:
Total age=420. New total=420+15+16=451. New average=451/32=14.09375 ≈14.1 but approx 14.125 yes.

This question belongs to: Maths Average

Question #2

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The average of 6 numbers is 14. If each number is divided by 2, what is the new average?

A. 9

B. 7

C. 8

D. 6

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Correct Answer: Option B

Explanation:
New average =14/2=7.

This question belongs to: Maths Average

Question #3

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The average of 20,40,60,80,100 is

A. 55

B. 60

C. 70

D. 50

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Correct Answer: Option B

Explanation:
300/5=60.

This question belongs to: Maths Average

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