Question

A gas station charges $0.10 less per gallon of gasoline if a customer also gets a car wash the price of gas is regularly $2.09 a gallon, and a car wash is $8.00. if you get a car wash, what are the possible amounts (in gallons) of gasoline that you can buy if you can spend at most $20?

Answer 1

6 because 2.09-0.10 =1.99, 20-8=12, 12/1.99 = 6.03 rounding it to 6

Explanation: