A trained covered x km at 40 kmph and another 2x km at 20 kmph.
A trained covered x km at 40 kmph and another 2x km at 20 kmph. Find the average speed of the train in covering the entire 2x km.
Answer/Solution
16
Steps/Work
Total time taken = x/40 + 2x/20 hours
= 5x/40 = x/8 hours
Average speed = 2x/(x/8) = 16 kmph
Answer: A
= 5x/40 = x/8 hours
Average speed = 2x/(x/8) = 16 kmph
Answer: A