SOLUTION: the cost of renting a car co consists of a cost per day and a cost per kilometer. the cost of renting a car for 2 days and 150 km is 69. the cost of renting the same car for 3 days

Question 1033165: the cost of renting a car co consists of a cost per day and a cost per kilometer. the cost of renting a car for 2 days and 150 km is 69. the cost of renting the same car for 3 days and 250 km is 108. what is cost per day
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the cost / day
Let = the cost / km
--------------------------
(1)
(2)
------------------------
(2)
(2)
Substitute (2) into (1)
(1)
(1)
(1)
(1)
and
(2)
(2)
(2)
(2)
----------------
The cost per day is $21
-----------------------
check:
(1)
(1)
(1)
and
(2)
(2)
(2)
OK
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