The Existing Entries in the Following Table Show the Maximum

The existing entries in the following table show the maximum quantities of milk shakes or fruit smoothies the college president and dining hall staffer could make during an afternoon shift, given a fixed amount of resources.
a. Fill in the remaining part of the table be sure to label the units) and answer the questions below.

$\begin{array}{llcc} \hline& \text {Number of } & \text {Number of } &\text { Opportunity } &\text { Opportunity } \\ &\text { Milk Shakes } &\text {Smoothies }&\text { Cost of 1}&\text { Cost of 1 }\\& \text { per Shift } & \text { per Shift }&\text {Smoothies }& \text { Milk Shakes }\\\hline \text { \text { Milk Shakes } } &50&25\\ \text {Dining Hall } &90&30\\ \text { Staffer } &\\\end{array}$

b. Who has a comparative advantage in producing smoothies?
c. Who has an absolute advantage in producing milk shakes?