The distance between City G and City H was 960 km apart. A lorry travelled at an average speed of 82 km/h from City G to City H. At the same time, a van travelled at an average speed of 78 km/h from City H to City G. 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
= 82 + 78
= 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
= 82 - 78
= 4 km/h
Distance that the lorry travelled further than the van
= 6 x 4
= 24 km
Answer(s): 24 km