Question

Belinda’s mother took the family out to dinner. The food bill came to $72.00. The sales tax is 6% of the cost of food. As a tip, Belinda’s mother left 20% of the original food bill. What was her total cost?

Answer 1

To calculate final cost you need to add tax and tip. Because you tip on the food bill without tax, you just add these two.

72 * 0.2 = 14.4 -> tip
72 * 0.06 = 4.32 -> tax

72 + 14.4 + 4.32 = 90.72

So the total cost was $90.72

You can find that faster:

72 * 1.26 = 90.72