The distance between City E and City F was 700 km apart. A bus travelled at an average speed of 89 km/h from City E to City F. At the same time, a lorry travelled at an average speed of 86 km/h from City F to City E. 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
= 89 + 86
= 175 km/h
Time taken for the bus and the lorry to meet
= 700 ÷ 175
= 4 h
Difference in the speed between the bus and the lorry
= 89 - 86
= 3 km/h
Distance that the bus travelled further than the lorry
= 4 x 3
= 12 km
Answer(s): 12 km