Average of 45,55,65 is MCQ with Answer and Explanation

Question Report Error

Average of 45,55,65 is

A. 50

B. 55

C. 60

D. 52

Answer: Option B

Solution (By JKExamLibrary)

Sum=165. Average=55.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1 Report Error

What is the average of all even numbers from 2 to 30?

A. 16.5

B. 15.5

C. 16

D. 15

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Correct Answer: Option C

Explanation:
Even numbers: 2 to 30 inclusive. Number of terms = (30-2)/2+1=15. Sum = n/2*(first+last) =15/2*(2+30)=15/2*32=240. Average=240/15=16.

This question belongs to: Maths Average

Question #2 Report Error

If the average of 6 numbers is 18 and average of 4 is 20, average of remaining 2 is

A. 12

B. 14

C. 16

D. 15

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Correct Answer: Option B

Explanation:
Sum6=108. Sum4=80. Remaining sum=28. Average=14.

This question belongs to: Maths Average

Question #3 Report Error

A man travels first half distance at 20 km/h, second at 30 km/h. Average speed?

A. 22 km/h

B. 25 km/h

C. 24 km/h

D. 26 km/h

View Answer & Solution Discuss

Correct Answer: Option C

Explanation:
2*20*30/(20+30)=1200/50=24 km/h.

This question belongs to: Maths Average

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