A car gets 20 kilometers per gallon of gasoline. How many gallons of gasoline would the car need to travel 180 kilometers?
Choose the correct choice from the following.
A) 8.5 gallons  B) 9 gallons  C) 6.5 gallons  D) 5.5 gallons  E) 6 gallons

Rationale: "each 20 kilometers , 1 gallon is needed . we need to know how many 20 kilometers are there in 180 kilometers ? 180 / 20 = 9 * 1 gallon = 9 gallons correct answer b"
Answer: B