Asandwich 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 combined ounces 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?

The are 7 ounces of combined meat and cheese in each sandwich (4+3 =7)
There were 13 sandwiches made in the hour (91 oz/7 oz = 13)
52 ounces of meat were used (4*13 = 52) If 13 sandwiches were made, and we know that 4 ounces of meat were used on each sandwich, 4*13 would tell us how many ounces of meat total were used.
39 ounces of cheese were used (3*13 = 39) If 13 sandwiches were made, and we know that 3 ounces of cheese were used on each sandwich, 3*13 would tell us how many ounces of cheese total were used.
You can check to see if the multiplication answers are correct by adding them (39+52 = 91)
I hope this helps you!