The speed of the boat sailing with the current is 12 km / h. The current speed is 3 km 500 mph.
| June 23, 2021 | education
The speed of the boat sailing with the current is 12 km / h. The current speed is 3 km 500 mph. How fast will the boat sail on the way back?
For the convenience of the calculation, we will translate the current speed in kilometers.
3km 500m / h = 3.5 km / h.
Determine the boat’s own speed. To do this, subtract the current speed from the speed along the river flow:
12 – 3.5 = 8.5 km / h.
On the way back, the boat will sail against the current of the river. Let’s find its speed:
8.5 – 3.5 = 5 km / h.
Answer: the speed of the boat on the way back will be 5 km / h.
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