Question

A goods train travels a station at a certain time and at fixed speed. after 6hrs another train leaves the same station and move in same direction of uniform speed of 90kmph. the train catches up the good train in 4hrs. find the speed of the good train.

Answer 1

let the speed of goods train be x dist covered by goods train in 10hrs (4+6)= dist covered by other train 4 hrs  10x=4*90 x=36kmph  Hope it helps