GENPACT Company Numerical Ability Time Distance and Speed

A train 108 m long moving at a speed of 50 kmph crosses a train 112 m long coming from opp direction in 6 seconds.The speed of the second train is
a)48 kmph b)54 kmph c)66 kmph d)82 kmph

Read Solution (Total 1)

both trains are moving in opposite direction means we need to add their speeds.
i.e: 1st train speed is = 50kmph
let the 2nd train speed = x kmph
relative speed = (50+x) kmph
= (50+x)* 5/18
= (250+5x)/18 m/sec

Distance covered by two trains = 108+112
= 220m

therefore, 220/((250+5x)/18) = 6
=> 250+5x=660
=> x=82km/hr.
9 years agoHelpfull: Yes(1) No(0)

GENPACT Other Question

Two trains of equal length take 10 seconds and 15 seconds respectively to cross a telegraph post.If the length of each train be 120 m,in what time(in seconds)will they cross each other travelling in opposite direction
a)10 b)12 c)15 d)20 A train X speeding with 120 kmph crosses another train Y,running in the same direction,in 2 min.If the lengths of the trains X and Y be 100 m and 200 m respectively.What is the speed of train Y?
a)111 kmph b)123 kmph c)127 kmph d)129 kmph