The motor boat’s own speed is 12.6 km / h, the current speed is 1.8 km / h. First, the boat sailed for 0.5 hours

The motor boat’s own speed is 12.6 km / h, the current speed is 1.8 km / h. First, the boat sailed for 0.5 hours against the current of the river, and then for 2.5 hours on the lake. What way did the boat sail during this time?

1. Speed of the boat against the current of the river:

12.6 – 1.8 = 10.8 km / h.

2. Determine the distance traveled:

a) upstream:

10.8 0.5 = 5.4 km;

b) on the lake:

12.6 2.5 = 31.5 km.

3. The total length of the covered path:

5.4 + 31.5 = 36.9 km.

Answer: 36.9 kilometers.