The distance between City E and City F was 700 km apart. A convertible travelled at an average speed of 98 km/h from City E to City F. At the same time, a lorry travelled at an average speed of 77 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
= 98 + 77
= 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
= 98 - 77
= 21 km/h
Distance that the convertible travelled further than the lorry
= 4 x 21
= 84 km
Answer(s): 84 km