The distance between City G and City H was 990 km apart. A van travelled at an average speed of 93 km/h from City G to City H. At the same time, a lorry travelled at an average speed of 72 km/h from City H to City G. How much further did the van travel than the lorry when the van met the lorry on the way?
Combined speed of the van and the lorry
= 93 + 72
= 165 km/h
Time taken for the van and the lorry to meet
= 990 ÷ 165
= 6 h
Difference in the speed between the van and the lorry
= 93 - 72
= 21 km/h
Distance that the van travelled further than the lorry
= 6 x 21
= 126 km
Answer(s): 126 km