Question

A person cover 300 km in 4 hours he covers 60 km by train and 240 km by car and if 100 km by train and remaining by car then he this 10 minutes past find speed of train

Answer 1

Answer:

100 km/h

Step-by-step explanation:

Let 'Vt' be the speed of the train

Let 'Vc' be the speed of the car,

Given that a person covers 300 km in 4 hours he covers 60 km by train and 240 km by car

=> Total time taken for the journey = 4 hr

=>Time taken to travel by train + time taken to travel by car = 4 hr

=> 60/Vt + 240/Vc = 4 hr---(*)

Also, given that  if he travels 100 km by train and remaining by car then he this 10 minutes faster

=>Total time taken for the journey = 4 hr - 10 min = 23/6 hr

=>Time taken to travel by train + time taken to travel by car = 23/6 hr

=> 100/Vt + 200/Vc = 23/6 hr---(**),

Solving (*) and (**) for Vt,

we get Vt = 100 km/hr.