Question

Problem Michael just finished a great meal in a restaurant in Wisconsin. The sales tax in Wisconsin is 5%, and it is customary to leave a tip of 15% for the waiter. The tip amount is calculated on the price of the meal before the tax is applied. Sales tax is not calculated on tips.If Michael left $18 dollar sign, 18 on the table to cover his meal, tax, and tip, what was the price of his meal before tax and tip?

Answer 1

First find the percent of the sales tax added with the tip amount, which is 20%
15% + 5% = 20%
and the percent amount to the original amount, so
20% + 100% = 120%
$18=120% of original amount (12/10 is the same thing as 120%), so
18/12*10=$15= price of meal before tax and tip!