Question

Lin's father is paying for a $20 meal. He has a 15%-off coupon for the meal. After the discount, 1 7% sales tax is applied. What does Lin's father pay for the meal?

Answer 1

$19.89

Explanation:

first coupon.

x/20=15/100

20×15=300

300/100=3

20-3=17

then tax

x/17=17/100

17×17=289

289/100=2.89

2.89+17=19.89

Answer 2

19.89

Explanation:

20 times .85= 17

17 times 1.17= 19.89