SOLUTION: ina crespo rowed 12 miles down the habashabee river in 1.5 hours , but the return trip took her 4 hours . find the rate ina rows in still water and the rate of the current . let x

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Question 1015810: ina crespo rowed 12 miles down the habashabee river in 1.5 hours , but the return trip took her 4 hours . find the rate ina rows in still water and the rate of the current . let x represent the rate ina can row in still water and let y represent the rate of the current.
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
Unknown Variables x rate in still water, y rate of river current;
system%28p=1.5%2Cn=4%2Cd=12%29
Meaning of known variables:
p   time done down river
n   time done up river
d   distance each way

                rate        time        distance
DownRiver       x+y          p            d
UpRiver         x-y          n            d

RT=D basic travel rate relationship rule relating rate time distance

system%28%28x%2By%29%2Ap=d%2C%28x-y%29%2An=d%29
Solve this system for x and y.

IF you solve this system all in symbols, then you have a solution which will
fit ALL examples which fit the form of the exercise.