The motor boat sailed along the river for 1.7 hours and against the current 2.1 km / h Calculate the entire journey if the speed
| August 1, 2021 | education
The motor boat sailed along the river for 1.7 hours and against the current 2.1 km / h Calculate the entire journey if the speed of this boat on the lake is 23.2 km / h and the speed of the river is 2.2 km / x.
1. Find the speed of the boat with the current.
23.2 + 2.2 = 25.4 kilometers.
2. Let’s calculate how many kilometers it passes in an hour against the current.
23.2 – 2.2 = 21 kilometers.
3. Find out how many kilometers she swam in 1.7 hours along the river.
1.7 * 25.4 = 43.18 kilometers.
4. Find the traversed path against the current in 2.1 hours.
2.1 * 21 = 44.1 kilometers.
5. Determine the entire path of the boat.
43.18 + 44.1 = 87.28 kilometers.
Answer: 87 kilometers 280 meters.
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