Question

Glen's father is paying for a $20 meal. He has a 15% off coupon for the meal. After the discount, a 7% sales tax is applied. Without the tip, how much does his father owe?

Answer 1

We start with the $20 bill. Applying a 15% discount,

`20\cdot0.85=17`

After the discount, $17 dollars are owed. Now, applying a 7% tax,

`17\cdot1.07=18.19`

This way, the father owes $18.19