The distance between City S and City T was 700 km apart. A convertible travelled at an average speed of 96 km/h from City S to City T. At the same time, a lorry travelled at an average speed of 79 km/h from City T to City S. 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
= 96 + 79
= 175 km/h
Time taken for the convertible and the lorry to meet
= 700 ÷ 175
= 4 h
Difference in the speed between the convertible and the lorry
= 96 - 79
= 17 km/h
Distance that the convertible travelled further than the lorry
= 4 x 17
= 68 km
Answer(s): 68 km