The distance between City E and City F was 830 km apart. A convertible travelled at an average speed of 86 km/h from City E to City F. At the same time, a lorry travelled at an average speed of 80 km/h from City F to City E. How much further did the convertible travel than the lorry when the convertible met the lorry on the way?
Combined speed of the convertible and the lorry
= 86 + 80
= 166 km/h
Time taken for the convertible and the lorry to meet
= 830 ÷ 166
= 5 h
Difference in the speed between the convertible and the lorry
= 86 - 80
= 6 km/h
Distance that the convertible travelled further than the lorry
= 5 x 6
= 30 km
Answer(s): 30 km