Twice last​ month, Judy Carter rented a car from a car rental company and traveled around the Southwest on business. The company rents its car for a daily​ fee, plus an additional charge per mile driven. Judy recalls that her first trip lasted 4​ days, she drove 450​ miles, and the rental cost her $ 233.50 . On her second business trip she drove 200 miles in 3​ days, and paid $ 149.00 for the rental. Find the daily​ fee, and find the mileage charge.

Respuesta :

Day rate: x
Charge per mile: y

4x+450y=233.5
3x+200y=149

12x+1350y=700.5
12x+800y=596

First equation minus the second equation
550y=103.5
Y=207/1100=0.188182
X=(149-414/11)/3=37.1212