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 gre

Question

aleksley [76]

3 years ago

12

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 gre

ater than the speed of the car?

Mathematics

1 answer:

maw [93] · Answer 1 · 2022-04-16T19:59:32+03:00

maw [93]3 years ago

3 0

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