The boat sailed 22.68 km along the river in 3 hours, and returned back in 4 hours. How many kilometers per
| April 7, 2021 | education
The boat sailed 22.68 km along the river in 3 hours, and returned back in 4 hours. How many kilometers per hour is the speed of the boat downstream more than its speed against the current?
1. Let’s calculate the speed of the boat along the river, if it sailed 22.68 km along the river in 3 hours:
22.68: 3 = 7.56 km / h.
2. Let’s calculate the speed of the boat against the current if it sailed 22.68 km in 4 hours:
22.68: 4 = 5.67 km / h.
3. Determine how much the speed of the boat downstream is greater than the speed of the boat upstream:
7.56 – 5.67 = 1.89 km / h.
Answer: the speed of the boat downstream is 1.89 km / h more than against the current.
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