Question

$75 dinner, 6.25% tax, 18% tip please show work.You have to find the total cost

Answer 1

According the the information given in the exercise, you know that the cost of the dinner was:

`d=_{}$75$`

Where "d" is the cost of the dinner in dollars.

Convert from percentages to decimal numbers by dividing them by 100:

1. 6.25% tax in decimal for:

`\begin{gathered} tax=(6.25)/(100) \\ tax=0.0625 \\ \end{gathered}`

2. 18% tip in decimal form:

`\begin{gathered} tip=(18)/(100) \\ \\ tip=0.18 \end{gathered}`

To find the amount in dollars of the tax and the the amount in dollars of the tip, multiply "d" by the decimals found above.

Knowing the above, let be "t" the total cost in dollars.

This is:

`\begin{gathered} t=d+0.0625d+0.18d \\ t=75+(0.0625)(75)+(0.18)(75) \\ t=93.1875 \end{gathered}`

Therefore the answer is: The total cost is $93.1875