Question

Find the average speed of train if it covers first half of the distance at 3 kmph and second half of the distance at 6 kmph.

• A. 4.5 kmph
• B. 5 kmph
• C. 4 kmph
• D. 6 kmph

Answer 1

Answer:

C. 4 kmph

Let total distance be 36 km. Time taken to cover 1st half distance = 18/3 = 6 hr Time taken to cover 2nd half distance = 18/6 = 3 hr Average speed = Total distance/Total time = 36/(6 + 3) = 36/9 = 4 km/h