Jenna is on a road trip. She drives for 2 hours at 60mph. She takes a bathroom break, and then she continues driving for 3 hours at 50 mph. She can drive for 30 miles on one gallon of gas. If one gallon of gas costs $2, how much money does she spend on gas for her trip?
First she drives 2 hours * 60 mph = <T>multiply(2, 60)=120 miles
Then she drives 3 hours * 50 mph = <T>multiply(3, 50)=150 miles
The total miles driven is 120 + 150 = <T>add(120, 150)=270 miles
Jenna uses 270 / 30 = <T>divide(270, 30)=9.0 gallons of gas.
The cost of gas is 9 * $2 = $<T>multiply(9, 2)=18
