The distance between City L and City M was 720 km apart. A bus travelled at an average speed of 97 km/h from City L to City M. At the same time, a lorry travelled at an average speed of 83 km/h from City M to City L. How much further did the bus travel than the lorry when the bus met the lorry on the way?
Combined speed of the bus and the lorry
= 97 + 83
= 180 km/h
Time taken for the bus and the lorry to meet
= 720 ÷ 180
= 4 h
Difference in the speed between the bus and the lorry
= 97 - 83
= 14 km/h
Distance that the bus travelled further than the lorry
= 4 x 14
= 56 km
Answer(s): 56 km