GMAT Exam Category

Two trains running at 45 and 54 kmph cross each other in 12 seconds when they run in opposite directions. When they run in the same direction, a person in the faster train observes that he crossed the other train in 32 seconds. Find the lengths of the two trains
a)250 b)450 c)260 d)234

Read Solution (Total 1)

D=S*T
L1+L2=99*(5/18)*12=330
L2=9*(5/18)*32=80
thus L1=330-80=250m
4 years agoHelpfull: Yes(0) No(0)

GMAT Other Question

A train crosses two persons, cycling in the same direction as the train in 12 and 18 seconds respectively. If the speeds of the two cyclists are 9 and 18 kmph respectively. Find the length and speed of the train.
a)80 m b89 m c)98 m d)90 m
Two trains of length 150 m and 250m run on parallel lines. When they run in the same direction it will take 20 seconds to cross each other and when they run in opposite direction it will take 5 seconds. Find the speeds of the two trains.
a)180 and 108 b)272 and 211 c)123 and 828 d)none of these