Shirley paid $75 in a hairdressing. The tax was 8.25% of the cost, so:
[tex]\text{tax}=75\cdot\frac{8.25}{100}=\frac{618.75}{100}=6.1875[/tex]The tips for the hairdresser was 10% of the cost, same as before:
[tex]\text{tip}=75\cdot\frac{10}{100}=\frac{750}{100}=7.5[/tex]The total cost was the sum of the cost, the tax and the tip:
[tex]\text{total cost=cost+tax+tip=75 + 6.1875 + 7.5= 88.6875}[/tex]The total cost is $88.6875
