Two boats are sailing towards each other. The first boat sailed along the current for 4 hours

Two boats are sailing towards each other. The first boat sailed along the current for 4 hours, its own speed is 10.3 km / h. The second boat passed against the current for 5 hours, its own speed is 10.9 km / h. The speed of the current is 2.8 km. / h. Which boat has traveled the longer distance and how much?

1. Let’s find at what speed the boat sailed along the river in an hour.

10.3 + 2.8 = 13.1 kilometers.

2. Determine how many kilometers he swam in 4 hours.

13.1 * 4 = 52.4 kilometers.

3. Let’s calculate the speed of another boat, which was going against the current of the river.

10.9 – 2.8 = 8.1 kilometers.

4. Find out what distance the other boat covered in 5 hours.

8.1 * 5 = 40.5 kilometers.

5. Find how many kilometers the first boat traveled more than the second.

52.4 – 40.5 = 11.9 kilometers.

Answer: The first boat covered 11.9 kilometers more.