The boat’s own speed is 21.6 km / h, and the speed of the river is 3.2 km / h. How far will the boat travel
| December 3, 2020 | education
The boat’s own speed is 21.6 km / h, and the speed of the river is 3.2 km / h. How far will the boat travel, moving 5 hours against the current?
1) 21 * 2/35 = 6/5 km / h – river speed
2) 21-6 / 5 = 99/5 km / h – travel speed
3) 99/5 * 6 = 594/5 km – the ship will pass
594/5 = 118.8 km
Answer: the boat will pass 118 km moving 5 hours against the current.
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