Question

Luisa's restaurant bill comes to $75.50, and she leaves a 15% tip. What is Luisa's total payment?

Answer 1

`$86.825`

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`

Answer 2

`$86.83`

Explanation:

The % symbol is like a unit of measurement but one that is worth `1/100`. Consequently 15% `->15xx1/100=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`