The goal of the consumer is to maximize the total utility or satisfaction derived from their purchase choices, given the unique budget constraint. To calculate total utility of a given combination of Tshirts and movies, one would use the following approach:

For a given combination of T$-$shirts and movies, assign a number of utils to that combination.

Use utils as a measure of utility, assigning a specific number to T$-$shirts and movies, and then add those together.

For a given combination of T$-$shirts and movies, survey a group of individuals to determine an average for utils to be assigned to the number of T$-$shirts and movies.

For a given combination of T$-$shirts and movies, use Google to identify the number of utils associated with the number of Tshirts and movies and then sum them.