The distance between City M and City N was 960 km apart. A lorry travelled at an average speed of 89 km/h from City M to City N. At the same time, a van travelled at an average speed of 71 km/h from City N to City M. How much further did the lorry travel than the van when the lorry met the van on the way?
Combined speed of the lorry and the van
= 89 + 71
= 160 km/h
Time taken for the lorry and the van to meet
= 960 ÷ 160
= 6 h
Difference in the speed between the lorry and the van
= 89 - 71
= 18 km/h
Distance that the lorry travelled further than the van
= 6 x 18
= 108 km
Answer(s): 108 km