## Elementary Technical Mathematics

2$\frac{7}{8}$ pies
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