Two motor ships departed simultaneously towards two piers, the distance between which is 120 km.

Two motor ships departed simultaneously towards two piers, the distance between which is 120 km. The speed of the first motor ship is 18 km / h and the second 22 km / h. How many hours will they meet?

1. According to the condition of the problem, 2 motor ships move towards each other.

Then the speed of joint movement is determined by the sum of individual speeds.

It is known that the speed of the first motor ship is V1 = 18 km / h, the speed of the second V2 = 22 km / h.

Let’s find the overall speed.

V = V1 + V2 = 18 + 22 = 40 km / h.

2. The initial distance between the ships is S = 120 km.

In order to find the travel time, you need to divide the distance by the speed of travel.

S / V = 120/40 = 3 hours.

Answer: In 3 hours the two ships will meet.