The distance between City N and City P was 770 km apart. A car travelled at an average speed of 83 km/h from City N to City P. At the same time, a lorry travelled at an average speed of 71 km/h from City P to City N. How much further did the car travel than the lorry when the car met the lorry on the way?
Combined speed of the car and the lorry
= 83 + 71
= 154 km/h
Time taken for the car and the lorry to meet
= 770 ÷ 154
= 5 h
Difference in the speed between the car and the lorry
= 83 - 71
= 12 km/h
Distance that the car travelled further than the lorry
= 5 x 12
= 60 km
Answer(s): 60 km