### Home > INT1 > Chapter 4 > Lesson 4.1.3 > Problem 4-30

4-30.

At Jaques’ Bistro they serve two sizes of espressos, small *x* of the small drinks and *y* of the large drinks. What do the following expressions represent in this context?

The variables and

*represent the volume sizes of the respective drinks.*

Since

andare volume sizes, thenrepresents the sum of the volumes of the drinks.

What did the variables

andrepresent?

Since

is the number of small drinks sold, andis the volume of the small drink, thenrepresents the total volume of all small sized drinks sold. What wouldrepresent?