The distance between City E and City F was 990 km apart. A van travelled at an average speed of 83 km/h from City E to City F. At the same time, a lorry travelled at an average speed of 82 km/h from City F to City E. 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
= 83 + 82
= 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
= 83 - 82
= 1 km/h
Distance that the van travelled further than the lorry
= 6 x 1
= 6 km
Answer(s): 6 km