Answer:
Step-by-step explanation:
12) unit rate= 7 1/2 ÷ 3 1/8
= 15/2 ÷ 25/8
[tex]=\frac{15}{2}*\frac{8}{25}\\\\=\frac{3}{1}*\frac{4}{5}\\\\=\frac{12}{5}=2\frac{2}{5}[/tex]
