The speed of the boat is 18 km / h. The speed of the river is 2 km. H. How far will it sail in 2 hours? in 3 hours?

1) Let’s find out at what speed the boat moves up the river, if we know that its speed is 18 km / h and the speed of the current is 2 km / h.
18 – 2 = 16 km / h.
2) Determine the speed of the boat down the river.
18 + 2 = 20 km / h.
3) Find out what distance the boat will cover in 2 hours.
2 * 16 = 32 km upstream.
2 * 20 = 40 km downstream.
4) Let’s find out which way the boat will go in 3 hours.
16 * 3 = 48 km upstream.
20 * 3 = 60 km downstream.
Answer: in 2 hours the boat will cover 32 km upstream and 40 km downstream, and in 3 hours 48 km upstream and 60 km downstream.