Two cars drove out of the two cities towards each other: one 80 km / h and the other 60 km / h.

Two cars drove out of the two cities towards each other: one 80 km / h and the other 60 km / h. How many hours will the cars meet if the distance between cities is 140 km?

we can find the speed of convergence of two cars by adding their speeds
1) 60 + 80 = 140 (km) – the speed of approach of two cars
2) Now we will find what distance they cover in 1 hour
S = v * t
140 * 1 = 140 (km) – this distance will be covered by cars in 1 hour
3) 140: 140 = 1 (h) -through this time 2 cars will meet
Answer: in 1 hour