The boat swam on the lake for half an hour at a speed of 13.2 km / h

The boat swam on the lake for half an hour at a speed of 13.2 km / h, and then swam at a mesh speed of 1.2 km. How long will it take on the way back.

1. According to the problem, the boat sailed in one direction on the lake at a speed of 13.2 km / h.

Travel time was half an hour or 0.5 hour.

Let’s calculate the distance traveled.

0.5 * 13.2 = 6.6 km.

2. It is known that the boat sailed back the same distance at a lower speed.

It was 1.2 km / h less than the previous speed.

Let’s calculate the new speed.

13.2 – 1.2 = 12 km / h.

3. Determine the time it took for the boat on the way back.

6.6 / 12 = 0.55 hours or 0.55 * 60 = 33 minutes.

Answer: It took Kater 33 minutes to get back.