Question 718144
A boat travels at 36 mph downstream. Against the current, the boat travels at 20 mph. How fast is the boat in still water and how fast is the current?
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Equations:
Downstream: b + c = 36
Upstream::  b - c = 20
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Add and solve for "b":
2b = 56
b = 28 mph (speed of the boat in still water)
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Solve for "c" using b + c = 36
28 + c = 36
c = 8 mph (speed of the current)
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Cheers,
Stan H.