Register
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?
109k views
0 votes
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?

User Giraffe Lion
by
7.9k points

1 Answer

3 votes
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

User Mr Talha
by
8.0k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

8.3m questions

10.9m answers

Other Questions

How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Link Copied!