Question

Gourmet in Italy has a policy of automatically adding an 18% tip to a restaurant bill. How much would a restaurant bill be if it had a tip of $3.20 added to it?

Answer 1

The restaurant charger a tip of the 18% of the bill

So the total amount charged is the money spent + 18%

The bill had a tip of $3.20 this is the 18% of the amount spent.

Using cross multiplication you can calculate the amount of the bill as:

Bill without tip: 100%

Tip: 18%

Total amount (bill + tip): 118%

If 18% ____ $3.20

Then 118%___$x