The distance between City K and City L was 860 km apart. A car travelled at an average speed of 93 km/h from City K to City L. At the same time, a lorry travelled at an average speed of 79 km/h from City L to City K. 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
= 93 + 79
= 172 km/h
Time taken for the car and the lorry to meet
= 860 ÷ 172
= 5 h
Difference in the speed between the car and the lorry
= 93 - 79
= 14 km/h
Distance that the car travelled further than the lorry
= 5 x 14
= 70 km
Answer(s): 70 km