• # question_answer A goods train leaves a station at a certain time and at a fixed speed. After 6 hours, an express train leaves the same station and moves in the same direction at a uniform speed of 90 kmph. This train catches up the goods train in 4 hours. Find the speed of the goods train. A)  36 kmph B)  40 kmph C)  30 kmph           D)  42 kmph

[a] Let the speed of the goods train be x kmph. Distance covered by goods train in 10 hours = Distance covered by express train in 4 hours. $\therefore$ $10x=4\times 90$ or $x=36$ So, speed of goods train = 36 kmph.