An airplane travels at a constant speed of 320 miles per hour. How far, in miles, will the airplane travel in 15 minutes? Only 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, . , -, and / are allowed in your answer. Answers that are mixed numbers must be entered as an improper fraction or decimal.

A motorcycle can go 50 miles using one gallon of gas. About how many gallons of gas will be used to go 150 kilometers? (Note: 1 mile is approximately 1.6 kilometers.)