Ray pay $812 to rent music equipment that costs $28 per hour. How many hours did he have the equipment?

Since Ray spent 812$ that means that if we do 812 divided by 28$ (amount of dollars an hour) we get how many hours he rented the equipment for so:

812/28 = 29 so he rented it for 29 hours

29 hours because

812: 28 = 29