Write each ratio in simplest form. 2 feet to 40 inches 72 millimeters to 3 meters 12 cups to 2 pints 42 seconds to 2 minutes 10 inches to 1 yard 1 mile to 800 feet 6 gallons to 15 quarts 20 hours to 4 days 3 meters to 108 centimeters 48 ounces to 5 pounds 7 cups to 20 ounces 2 years to 16 months​