Question

Two train, Each 80 m long, passes each other on parallel lines. If they are going in same direction, the faster train takes one minute to pass the other completely. If they are going in the opposite directions, they over take each other in three second. Find the rate of each train in meter per second.

Answer 1

Answer:

Step-by-step explanation:

Given distance=80km

Let speed of car A is xKm/hr

Speed of car B is yKm/hr

Same direction given time t=8hrs

80=(x-y)×8

On solving we get x-y =10 ------> 1

Opposite direction given time t=1hr 20min=4/3 hrs

80=(x+y)×4/3

On solving we get x+y=60-------> 2

Adding equation 1 and 2 we get

x=35km/hr and y=25km/hr.

Thank you