SOLUTION: if a boat travels 8 miles upstream in the same time it takes it to travel 12 miles downstream, and the boat can go 15 miles per hour, what is the rate of the current?

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Question 1055397: if a boat travels 8 miles upstream in the same time it takes it to travel 12 miles downstream, and the boat can go 15 miles per hour, what is the rate of the current?
Found 3 solutions by josgarithmetic, MathTherapy, ikleyn:
Answer by josgarithmetic(39616)   (Show Source):
You can put this solution on YOUR website!
"...the boat can go 15 miles per hour."

SPEED TIME DISTANCE UPSTREAM 15 t 8 DOWNSTREAM 15 t 12

Fix your description and make the needed changes to the data in the table.

Answer by MathTherapy(10551)   (Show Source):
You can put this solution on YOUR website!

if a boat travels 8 miles upstream in the same time it takes it to travel 12 miles downstream, and the boat can go 15 miles per hour, what is the rate of the current?

With C being rate of current, the following TIME equation is formed:
Solving the equation should result in the following rate of current:

Answer by ikleyn(52775)   (Show Source):
You can put this solution on YOUR website!
.
if a boat travels 8 miles upstream in the same time it takes it to travel 12 miles downstream, and the boat can go 15 miles per hour,
what is the rate of the current?
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The condition needs to be corrected: instead of "can go 15 miles per hour" must be
"can go 15 miles per hour in still water."

Follow the solution by MathTherapy.

Ignore writing by josgarithmeic.