AptitudeConcepts

Problems 1)A person covers a certain distance at 7kmph .How many meters does he cover in 2 minutes. Solution:: speed=72kmph=72*5/18 = 20m/s distance covered in 2min =20*2*60 = 2400m 2)If a man runs at 3m/s. How many km does he run in 1hr 40min Solution:: speed of the man = 3*18/5 kmph = 54/5kmph Distance covered in 5/3 hrs=54/5*5/3 = 18km 3)Walking at the rate of 4knph a man covers certain distance [Read More]

(1) Time taken by a train x mt long in passing a signal post or a pole or a standing man = time taken by the train to cover x mt (2) Time taken by a train x mt long in passing a stationary object of length y mt = time taken by the train to cover x+y mt (3) Suppose two trains or two bodies are moving in the same [Read More]