Best Rentals charges a daily fee for renting its cars. Barney was charged $105 for 3 days and 300 miles, while Mary was charged $195 for 5 days and 600 miles. What does Best Rental charge per day?

Question

Best Rentals charges a daily fee for renting its cars.  Barney was charged $105 for 3 days and 300 miles, while Mary was charged $195 for 5 days and 600 miles.  What does Best Rental charge per day?

anonymous · Answer

15

anonymous · Answer

say x is charge/day 
        y is charge/300mile 

3x+y=105 
5x+2y=195

anonymous · Answer

still working on it!!

anonymous · Answer

your answer is good I am just doing the equation

anonymous · Answer

Thanks

anonymous · Answer

medal would help too!

anonymous · Answer

Shadow could you break it down for me, I still don't get it

anonymous · Answer

say x is charge/day --------------rent for a car
       y is charge/300mile ---------charge for mileage

Barney rented for 3 days and drove 300 miles  3x+y=105
Mary rented for 5 days and drove 600 miles  5x+2y=195

anonymous · Answer

ok so far I got that part

anonymous · Answer

then multiply first equation by 2 and subtract second equation

   6x    +   2y =   210
  -5x      -2y   =  -195

y terms eliminate

x= 15

anonymous · Answer

thanks

anonymous · Answer

let d be the cost per day to rent the car and m be the cost per mile driven.
Solve the following simultaneous equations for d and m:
3d+300m=105,5d+600m=192
d =$15/day, m=$1/5 per mile or 20 cents per mile