a From the exercise, we know that S and L represents the volume in each of the cups. Therefore, the sum of S and L must be the total volume of both sizes of espresso.
b From the exercise, we know that x and y is the number of small and large drinks that was made in a given day. Therefore, the sum of x and y must be the total number of drinks.
c The product of x and S is the total volume of all small sized drinks sold. Similarly, the product of y and L is the total volume of all large sized drinks sold. Therefore, the sum of xS and yL must be the total volume of all of the drinks sold.
Mathleaks uses cookies for an enhanced user experience. By using our website, you agree to the usage of cookies as described in our policy for cookies.