A trained covered x km at 40 kmph and another 2x km at 20 kmph. Find t – InterviewSolution

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1.

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 3x km.

Answer»

Total time TAKEN = x/40 + 2x/20 hours

= 5x/40 = x/8 hours

AVERAGE SPEED = 3x/(x/8) = 24 kmph

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