The student's question is a mathematical problem of dividing the total combined meat and cheese used (91 ounces) by the amount per sandwich (7 ounces) to find out that 13 sandwiches were made.
The student's question involves calculating the number of sandwiches that can be made given specific quantities of ingredients and understanding the concept of a limiting reactant. When making sandwiches, one must consider the ratio of meat to cheese required for each sandwich. In the stated problem, each sandwich consists of 4 ounces of meat and 3 ounces of cheese, combining for a total of 7 ounces per sandwich. With 91 ounces of meat and cheese used after an hour, one can determine the total number of sandwiches made.
To find the number of sandwiches, divide the total combined meat and cheese (91 ounces) by the amount used for each sandwich (7 ounces):
Calculate the total amount of meat and cheese used per sandwich: 4 ounces of meat + 3 ounces of cheese = 7 ounces.
Divide the total combined ounces by the amount used per sandwich: 91 ounces ÷ 7 ounces = 13 sandwiches.
Therefore, 13 sandwiches were made using 91 ounces of meat and cheese.