#### Explanation:

To obtain the tip, you multiply the restaurant bill by the percent increase that is 15% (or $0.15$), then you add the actual bill to the tip to determine the total restaurant bill.

"tip" = $75.5xx0.15 =$11.325

"total restaurant bill" = $11.325 +$75.5= 86.825

Jun 30, 2018

$86.83 #### Explanation: The % symbol is like a unit of measurement but one that is worth $\frac{1}{100}$. Consequently 15% $\to 15 \times \frac{1}{100} = \frac{15}{100}$As such the tip is 15/100xx$75.50 = $11.325 Rounding this to the nearest 2nd decimal place gives: $11.33

Thus the total payment was:

$75.50 ul($11.33 larr" Add")
\$86.83