SOLUTION: Lusine is on a boat going to an island twelve miles away for a picnic. The way there, with the current, it takes her 3 hours while the way back, against the current, it takes her

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Question 610710: Lusine is on a boat going to an island twelve miles away for a picnic. The way there, with the current, it takes her 3 hours while the way back, against the current, it takes her 4 hours. What is the speed of her boat and what is the speed of the current?
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
b + c = 12 / 3

b - c = 12 / 4

add the equations to find b (c will be eliminated); then substitute back to find c