Question 289494
Primo Car Rental charges $39 per day plus $0.25 per mile. 
Ultimo Car Rental charges $28 per day plus $0.60 per mile. 
Find the daily mileage for which the Ultimo charge is twice the Primo charge.
:
Primo equation
cost = .25m + 39
:
Ultimo equation
cost = .60m + 28 
:
"Find the daily mileage for which the Ultimo charge is twice the Primo charge."
Ultimo = twice Primo
.60m + 28 = 2(.25m + 39)
solve for m