On the river two boats are going towards each other. Their speeds are 23 km / h and 27 km / h.

On the river two boats are going towards each other. Their speeds are 23 km / h and 27 km / h. How many hours will the boats meet if the distance between them is 120 km?

1) Since the boats are moving towards each other, in an hour they will overcome the distance equal to the sum of their speeds:
23 + 27 = 50 (km) – boats will overcome in an hour.
2) Now let’s calculate how long it will take for them to cover 120 km:
120: 50 = 2.4 (h).
Answer: the boats will meet in 2.4 hours.