The distance between City X and City Y was 870 km apart. A car travelled at an average speed of 92 km/h from City X to City Y. At the same time, a lorry travelled at an average speed of 82 km/h from City Y to City X. 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
= 92 + 82
= 174 km/h
Time taken for the car and the lorry to meet
= 870 ÷ 174
= 5 h
Difference in the speed between the car and the lorry
= 92 - 82
= 10 km/h
Distance that the car travelled further than the lorry
= 5 x 10
= 50 km
Answer(s): 50 km