The distance between City R and City S was 620 km apart. A convertible travelled at an average speed of 80 km/h from City R to City S. At the same time, a car travelled at an average speed of 75 km/h from City S to City R. How much further did the convertible travel than the car when the convertible met the car on the way?
Combined speed of the convertible and the car
= 80 + 75
= 155 km/h
Time taken for the convertible and the car to meet
= 620 ÷ 155
= 4 h
Difference in the speed between the convertible and the car
= 80 - 75
= 5 km/h
Distance that the convertible travelled further than the car
= 4 x 5
= 20 km
Answer(s): 20 km