SOLUTION: I need help setting this equation up, I keep getting a neagtive number.. One taxi cab charges $2.00 plus 75 cents per mile while a second taxi charges 75 cents plus 80 cents per

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Question 593954: I need help setting this equation up, I keep getting a neagtive number..
One taxi cab charges $2.00 plus 75 cents per mile while a second taxi charges 75 cents plus 80 cents per mile. For what length trip would the fee charge by each taxi be the same?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
One taxi cab charges $2.00 plus 75 cents per mile while a second taxi charges 75 cents plus 80 cents per mile.
For what length trip would the fee charge by each taxi be the same?
:
Not sure how you would get a negative, but lets do it this way
:
Let d = trip distance that both cabs would cost the same
:
2nd cab cost = 1st cab cost
.80d + .75 = .75d + 2.00
.80d - .75d = 2.00 - .75
.05d = 1.25
d = 1.25/.05
d = 25 miles
:
:
See if this is true, find the cost for each at 25 mi
.80(25) + .75 = $20.75
.75(25) + 2.00 = 20.75