Problem #$1$: Horizontal curves $(6$ points$)$

A horizontal curve has a $BC$ station of $12+15\mathrm{.}93$ and an $EC$ station of $16+22\mathrm{.}40.$ The radius of the "curve is $150\mathrm{.}00$ feet. Determine the PI station of the curve $($hint you need I and T$).$