The distance between City R and City S was 680 km apart. A van travelled at an average speed of 91 km/h from City R to City S. At the same time, a convertible travelled at an average speed of 79 km/h from City S to City R. How much further did the van travel than the convertible when the van met the convertible on the way?
Combined speed of the van and the convertible
= 91 + 79
= 170 km/h
Time taken for the van and the convertible to meet
= 680 ÷ 170
= 4 h
Difference in the speed between the van and the convertible
= 91 - 79
= 12 km/h
Distance that the van travelled further than the convertible
= 4 x 12
= 48 km
Answer(s): 48 km