SOLUTION: A sailboat takes 4 hours to travel 128 km going upstream. The return trip takes 2 hours going down stream. What is the rate of the boat in still water and what is the rate of the c

Question 927422: A sailboat takes 4 hours to travel 128 km going upstream. The return trip takes 2 hours going down stream. What is the rate of the boat in still water and what is the rate of the current?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = speed of boat in still water
y = speed of current
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s = d/t
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upstream:
x - y = 128/4
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downstream:
x + y = 128/2
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put the system of linear equations into standard form
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x - y = 32
x + y = 64
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = speed of boat in still water = 48 kph
y = speed of current = 16 kph
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---
Solve systems of linear equations up to 6-equations 6-variables:
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