The motor ship and the boat departed simultaneously from the same pier in opposite directions.

The motor ship and the boat departed simultaneously from the same pier in opposite directions. The average speed of the motor ship is 550 meters per minute and the average speed of the boat is 200 meters per minute less. What is the distance between them in 3 hours.

1. Let’s find the speed of the boat, taking into account that it is 200 meters per minute less than the speed of the motor ship:
550 – 200 = 350 (m / min);
2. Let’s calculate the speed with which they move away from each other:
350 + 550 = 900 (m / min);
3. Let’s find the distance between them in 3 hours:
3 hours = 180 minutes;
900 * 180 = 162000 (m);
162000 m = 162 km;
Answer: the distance between the motor ship and the boat will be 162 kilometers.