Use following data, assuming that each gate is available for all the aircrafts class assume any other suitable data if required.

Given data: $$ \begin{array}{c|c|c} \text { Aircraft Class } & \text { Mix } & \text { Avg. Occupany time } \\ \hline 1 & 15 \% & 25 \mathrm{~min} \\ 2 & 35 \% & 45 \mathrm{~min} \\ 3 & 50 \% & 60 \mathrm{~min} \end{array} $$

\begin{array}{l} Gate Capacity,GC=\frac{1}{\frac{(15 \times 25)+(35 \times 45)+(50 \times 60)}{100}}\ GC=0.0202 \text { aircraft/min }\ =1.2 \text { aircraft/hr }\ =29 \text { aircraft/day } \end{array}