Which situation could be modeled by the expression 13÷5 ? a. one-third cup of sugar is used for each of 5 cupcakes. what is the total amount of sugar used? b. each of 5 cupcakes used 13 pound of sugar. what is the total amount of sugar used? three cups of sugar are used for 5 cupcakes. how much sugar was used for each cupcake? c. one-third pound of sugar is used for 5 cupcakes. how much sugar is used for each cupcake?

The expression 13÷5 is a fraction. Here the only option that makes sense as per this expression is:

B. Each of 5 cupcakes used 13 pound of sugar. What is the total amount of sugar used?

Therefore the option B is correct

Also please note:

A fraction is a number that represents a part of a whole. It consists of a numerator and a denominator. The numerator represents the number of equal parts of a whole, while the denominator is the total number of parts that make up said whole.