A sandwich shop serves 4 ounces of meat and 3 ounces of cheese on each sandwich. After making sandwiches for an hour, the shop owner has used 91 combined ounces of meat and cheese.
How many ounces total of meat and cheese are used on each sandwich?
How many sandwiches were made in the hour?
How many ounces of meat were used?
How many ounces of cheese were used?