The boat covered the distance between the two marinas in 3 hours at a speed of 20 km / h; the boat

The boat covered the distance between the two marinas in 3 hours at a speed of 20 km / h; the boat was replaced by a motor ship whose speed is 30 km / h. How long does the motor ship cover the distance between these marinas? How much time do passengers save?

1. Find the distance between the two marinas:

3 * 20 = 60 kilometers.

2. Let us find how long the distance between the two piers will take for the motor ship:

60/30 = 2 hours.

3. Let’s find how much time the passengers will save:

3 – 2 = 1 hour.

Answer: the ship will cover the distance between the two marinas in 2 hours, while the passengers will save 1 hour of their time.