Question

Allison spent a total of 16.20 for lunch at burrito de lite, including tax and tip. She paid 8 percent sales tax on her purchase and then left the waiter a tip equivalent to 20 percent of her total bill including tax. What was the cost of Allison's meal, before tax and the tip?

Answer 1

Let the cost of the meal be x.
Total cost=(x+0.08x)(1.20)=16.20.
1.08×1.20x=16.20, 1.296x=16.20, so x=12.50.
The meal cost 12.50 before tax and tip.