Average speed for round trip at 40 km/h going and 60 km/h returning? MCQ with Answer and Explanation

Average speed for round trip at 40 km/h going and 60 km/h returning?

A. 55 km/h

B. 45 km/h

C. 48 km/h

D. 50 km/h

Answer: Option C

2*40*60/(40+60)=48 km/h.

This question belongs to: Maths Average

No comments yet. Be the first to start the discussion!

Question #1 Report Error

Average of 15 numbers 2160. If average of 9 is 2155, average of remaining 6?

A. 2168

B. 2170

C. 2167.5

D. 2165

Correct Answer: Option C

Explanation:
Sum15=32400. Sum9=19395. Remaining=13005. Average=2167.5.

This question belongs to: Maths Average

Question #2 Report Error

The average of 3 numbers is 28. If two numbers are 25 and 30, find the third.

A. 29

B. 26

C. 27

D. 31

Correct Answer: Option A

Explanation:
Sum=3×28=84. Third =84-25-30=29.

This question belongs to: Maths Average

Question #3 Report Error

The average of 10 numbers is 12. If each number is divided by 4, what is the new average?

A. 4

B. 2

C. 3

D. 5

Correct Answer: Option C

Explanation:
New average =12/4=3.

This question belongs to: Maths Average