Nina paid the bill for dinner with her family. The total cost of the food was $65, and the restaurant added an 8 percent sales tax, $5.20, to the bill. Nina wants to pay a 15 percent tip on the total bill including sales tax. What is the amount of the tip?
You add $65 and $5.20, which gives you $70.20. Then you divide $70.20 by .15 which gets you $10.53. Then you add $70.20 and $10.53 which gives you the total, $80.73
