it costs 8.00$ for a car wash, and nearby gasoline is selling for 1.369$ per lire. TAERRI HAS 49.75$ to spend and her car is dirty so she must wash it.

Question

what is the maximum number of litres of gasoline that she can purchase? define variable, create equation and solve 

Answer 1

The amount of money she has to spend on gasoline will be

49.75 - 8 = 41.75    since she is going to spend $8 on car wash

 

We have $41.75 to spend on gasoline which costs 1.369 $/L

 

Looking at the units ....  $/($/L) = L  so

 

41.75$/1.369 $/L = 30.497 liters of gasoline