The average of 10,20,30,40,50 is MCQ with Answer and Explanation

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The average of 10,20,30,40,50 is

A. 32

B. 30

C. 35

D. 28

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum=150. Average=30.

This question belongs to: Maths Average

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Question #1

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Average of 12 numbers 920. If average of 8 is 915, average of remaining 4?

A. 925

B. 932

C. 930

D. 928

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Correct Answer: Option C

Explanation:
Sum12=11040. Sum8=7320. Remaining=3720. Average=930.

This question belongs to: Maths Average

Question #2

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The average of 7 numbers is 18. If one number is 24, what is the average of the remaining 6 numbers?

A. 19

B. 17

C. 16

D. 18

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Correct Answer: Option B

Explanation:
Total = 7×18 = 126. Remaining total = 126−24 = 102. Average = 102/6 = 17.

This question belongs to: Maths Average

Question #3

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If average of three numbers is 40. Two numbers average 35, third is

A. 55

B. 40

C. 45

D. 50

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Correct Answer: Option D

Explanation:
Third = 3*40 - 2*35 =120 -70=50.

This question belongs to: Maths Average

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