SOLUTION: It takes Brian 15 hours longer to model a car than it takes John. If they work together, they can build the model car in 4 hours. How long does it take Brian to model the car on hi

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Question 1021285: It takes Brian 15 hours longer to model a car than it takes John. If they work together, they can build the model car in 4 hours. How long does it take Brian to model the car on his own?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39625)   (Show Source): You can put this solution on YOUR website!
PERSON(s)             RATE

Brian                 

John                  

Both Together         


Answer by MathTherapy(10555)   (Show Source): You can put this solution on YOUR website!

It takes Brian 15 hours longer to model a car than it takes John. If they work together, they can build the model car in 4 hours. How long does it take Brian to model the car on his own?
Brian's time, alone:  

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