The speed of the boat along the river is 10 km / h, and against the current 6 km / h. Find your own boat speed.
| December 30, 2020 | education
The speed of the boat along the river is 10 km / h, and against the current 6 km / h. Find your own boat speed. Find the speed of the river.
Decision:
x – own boat speed
y is the speed of the river
1) Let’s compose a system of equations:
x + y = 10
x-y = 6
2x = 16
x = 16/2
x = 8
8km / h – boat’s own speed
2) Find the speed of the river:
8 + y = 10
y = 10-8
y = 2
2km / h – river speed
Answer: 2 km / h
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