Question

Two passenger trains pass(at the same instant) through points A and B,which are 200 km apart.They run on parallel tracks towards each other at speeds of 60 km/h and 45 km/h respectively.They will meet in time ??

Answer 1

Dear Student,

Since both trains are moving towards each other, net velocity is relative velocity given by the sum of the velocities of each train i.e.,

v = (60 + 45)=105 kmph
distance, AB = 200 km.

So, time taken to meet :

$t=\frac{200km}{105kmph}=\frac{40}{21}hr$

Regards,
Manoj Singh.