Average of 65,75,85,95 is MCQ with Answer and Explanation

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Average of 65,75,85,95 is

A. 85

B. 80

C. 75

D. 78

Answer: Option B

Solution (By JKSSB Mock Tests)

320/4=80.

This question belongs to: Maths Average

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Question #1

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Average of 8 numbers 2150. If average of 5 is 2145, average of remaining 3?

A. 2160

B. 2155

C. 2158.33

D. 2157

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Correct Answer: Option C

Explanation:
Sum8=17200. Sum5=10725. Remaining=6475. Average≈2158.33.

This question belongs to: Maths Average

Question #2

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Average of 1 to 50 is

A. 25.5

B. 24.5

C. 26

D. 25

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Correct Answer: Option A

Explanation:
(50×51)/2 /50 =25.5.

This question belongs to: Maths Average

Question #3

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The average age of father and son is 30. If father is 45, son's age?

A. 20

B. 25

C. 15

D. 10

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Correct Answer: Option C

Explanation:
Sum =60. Son=60-45=15.

This question belongs to: Maths Average

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