Answer:
Step-by-step explanation:
Cost of 5 packet = $ 2m
Cost of 1 packet = [tex]\frac{2m}{5}[/tex]
Cost of 3 packets = [tex]\frac{2m}{5}*3=\frac{6m}{5}[/tex]
Change receive by her = [tex]10 -\frac{6m}{5}\\\\[/tex]
[tex]=\frac{10*5}{1*5}-\frac{6m}{5}\\\\=\frac{50}{5}-\frac{6m}{5}\\\\=\frac{50-6m}{5}[/tex]
