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

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

A. 30

B. 28

C. 32

D. 35

Answer: Option A

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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The average of 5 numbers is 40. If one number is 60, find the average of the remaining 4.

A. 34

B. 33.75

C. 35

D. 36

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Correct Answer: Option C

Explanation:
Sum=5×40=200. Remaining sum=200-60=140. Avg=140/4=35.

This question belongs to: Maths Average

Question #2

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Average of 8 numbers 450. If average of 5 is 445, average of remaining 3?

A. 457

B. 458.33

C. 455

D. 460

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Correct Answer: Option B

Explanation:
Sum8=3600. Sum5=2225. Remaining=1375. Average≈458.33.

This question belongs to: Maths Average

Question #3

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The average of 16,24,32,40,48,56 is

A. 35

B. 38

C. 36

D. 30

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Correct Answer: Option C

Explanation:
Sum=216. Average=36.

This question belongs to: Maths Average

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