Answer
2$\frac{7}{8}$ pies
Work Step by Step
No of pies in the restaurant = 15$\frac{3}{8}$
No of pies used = 12$\frac{1}{2}$
Remaining pies = 15$\frac{3}{8}$ - 12$\frac{1}{2}$
= $\frac{123}{8}$ - $\frac{25}{2}$
= $\frac{123}{8}$ - $\frac{25}{2}\times$ $\frac{4}{4}$
=$\frac{123}{8}$ - $\frac{100}{8}$
=$\frac{23}{8}$
=2$\frac{7}{8}$ pies