Question

A train travelled from Hong Kong to Beijing. It travelled at an average speed of 160 km/h in the first 4 hours. After that, it travelled at another average speed of 180 km/h. If the distance between Hong Kong to Beijing is 1180 km, what was the total time for the whole journey? ​

Answer 1

7h

Step-by-step explanation:

4.160=640km

1180-640=540km

540:180=3h

3+4=7h

Answer 2

Answer: 7 hours

Step-by-step explanation:

h=hours

160*4=640

1180-640=180h

180h=540

h=3

3+4=7 hours