The distance between City D and City E was 950 km apart. A car travelled at an average speed of 100 km/h from City D to City E. At the same time, a lorry travelled at an average speed of 90 km/h from City E to City D. 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
= 100 + 90
= 190 km/h
Time taken for the car and the lorry to meet
= 950 ÷ 190
= 5 h
Difference in the speed between the car and the lorry
= 100 - 90
= 10 km/h
Distance that the car travelled further than the lorry
= 5 x 10
= 50 km
Answer(s): 50 km