SOLUTION: rental car costs $25 per day plus
$0.20 per mile. If someone has $200 to spend and
needs to drive the car 90 miles each day, for how
many days can that person rent the car?
Algebra ->
Coordinate Systems and Linear Equations
-> SOLUTION: rental car costs $25 per day plus
$0.20 per mile. If someone has $200 to spend and
needs to drive the car 90 miles each day, for how
many days can that person rent the car?
Log On
Question 471094: rental car costs $25 per day plus
$0.20 per mile. If someone has $200 to spend and
needs to drive the car 90 miles each day, for how
many days can that person rent the car? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = number of days the person can rent the car
The formula to use is:
(cost of the rental) = (cost per day)x(number of days) + (cost per mile)x(number of miles)
and
(number of miles) = (miles per day)x(number of days)
given:
Cost per day = dollars/day
Cost per mile = dollars/mi
Miles per day = mi/day
The formula must be OK dimensionally, that is
it must be dollars = dollars
----------------------------
The fraction of a day would not be allowed, so
the person could rent the car for 7 days
That means
They would spend $187.60
