The gas tank in a hybrid car can hold 12 gallons of gas. if the car can go 228 miles without having to refuel, how many miles per gallon does the car get?

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.