The distance between City V and City W was 790 km apart. A car travelled at an average speed of 88 km/h from City V to City W. At the same time, a lorry travelled at an average speed of 70 km/h from City W to City V. How much further did the car travel than the lorry when the car met the lorry on the way?
Combined speed of the car and the lorry
= 88 + 70
= 158 km/h
Time taken for the car and the lorry to meet
= 790 ÷ 158
= 5 h
Difference in the speed between the car and the lorry
= 88 - 70
= 18 km/h
Distance that the car travelled further than the lorry
= 5 x 18
= 90 km
Answer(s): 90 km