1. At Hoffman's Bike Rentals, it costs $26 to rent a bike for 5 hours. How many dollars does it cost per hour of bike use?= $5.2 = 5 dollars and 20 cents. 2. Elsa bought 20 pounds of flour for $10. How many dollars did she pay per pound of flour? = $0.5 = 50 cents per pound of flour.