$4\mathrm{.}5$ Outside air $(95\backslash$deg F $/75\backslash$deg F$)$ flowing at $2,500$ cfm is mixed with return air $(75\backslash$deg F $/63\backslash$deg F$)$ at $7,500$ cfm$.$ Find the mixed air conditions $($db$,$ wb$,$ DP$,$ RH$,$ w$,$ h$,$ and v$).$ Sketch the three state points on a psychrometric chart.