Riley goes out to lunch. The bill, before tax and tip, was $20. A sales tax of 6% was added on. Riley tipped 25% on the amount after the sales tax was added. How much tip did she leave?

Answer 1

6% of $20 is $1.20 for a total $21.20 after tax before the tip

25% of $20 is $5. 25% of $1.20 is 30 cents. 25% = .25 = 1/4

1/4 of $21.20 = 21.20/4 = $5.30

tip is $5.30