The boat, the own speed of which is 15.5 km / h, went 2 hours along the river and 3 hours

The boat, the own speed of which is 15.5 km / h, went 2 hours along the river and 3 hours against the current. What way did the boat go during this time, if the current speed is 1.5 km / h?

The boat’s own speed and the current speed are known from the condition that we find the speeds in both directions:
15.5 + 1.5 = 17 (km / h) – downstream speed;
15.5 – 1.5 = 14 (km / h) – speed upstream.
We find the distance traveled by the boat in each direction:
17 * 2 = 34 (km) – downstream;
14 * 3 = 42 (km) – upstream.
The entire route of the boat is:
34 + 42 = 76 (km).
Answer: the boat covered 76 km.