Question

The distance between two station is 500 kmA train goes from one station to the other with the speed of 50 km/hr and return from a speed of 25 km/hr what is is the avrage speed of the train during the journey​

Answer 1

$time \: taken \: by \: the \: train \: to \: go \: one \: station \: to \: another \: station = \frac{500}{50} = 10 \: hours$

$time \: taken \: by \: the \: train \: to \: return \: from\:another \: station \: to \: same \: station = \frac{500}{25} = 20 \: hours$

$average \: speed = \frac{1000}{30} = 33.3 \: km \: h$