SOLUTION: Car rental agency A will rent a compact car for $40 per day and an additional charge of $0.20 per mile. Car rental agency B will charge only $0.16 per mile but charges $51 per day.

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Question 196835: Car rental agency A will rent a compact car for $40 per day and an additional charge of $0.20 per mile. Car rental agency B will charge only $0.16 per mile but charges $51 per day. If Adam wanted to rent a car for four days, how many miles would Adam have to drive to make car rental agency B a better bargain?
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
A........ cost=.2x+40(d)......where x is number of miles
:
B....... cost=.16x+51(d).....where d is the number of days
:
.2x+40(4)=.16x+51(4)
:
.2x+160=.16x+204
:
.04x=44
:
x=1100 miles