Question

Find the percent of tip:

Answer 1

The answer is 14%

Cost of meal is 100%:         $18.50 is 100%
Tip is x%:                             $2.59 is x

Make a proportion:
$18.50 : 100% = $2.59 : x
x = 100% * $2.59 : $18.50
x = 14%