Tourists covered 255 km for a 4-hour ride by car and a 7-hour ride by train. What is the speed of the train, if it is 5 km/h greater than the speed of the car?
Let the speed of car be x km/h speed of train=x+5 km/h distance=speed*time thus distance covered by car: x*4=4x km distance covered by train: 7(x+5) km total distance: 4x+7x+35=255 11x=255-35 11x=220 x=20 km/h speed of train=20+5=25 km/hr
