Along the river the boat sailed 30 km / h at a speed of 17 km / h and against the current the same distance
| April 9, 2021 | education
Along the river the boat sailed 30 km / h at a speed of 17 km / h and against the current the same distance at a speed of 2 km / h less than how long the boat sailed against the river.
1) Find out at what speed the boat was moving against the current, if it is known, its speed is 2 km / h more downstream, and along the river the boat moved at a speed of 17 km / h.
17 – 2 = 15 km.
2) Let us find out how much time the boat spent sailing against the river, if it is known that it moved at a speed of 15 km / h and covered a distance of 30 km.
30/15 = 2 hours.
Answer: the boat was on the way upstream for 2 hours.
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