Respuesta :
[tex]\bf \begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{7\% of 68}}{\left( \cfrac{7}{100} \right)68}\implies 4.76 \\\\\\ \stackrel{\textit{total cost}}{68+4.76}\implies 72.76[/tex]
Answer: $72.76
Step-by-step explanation: First, you multiply $68 by 7% and you get 4.76, Then you add $68 and 4.76 and you get $72.76
