Zoe paid \$18.60$18.60 in sales tax and tips for her dinner. the sales tax rate is 11\%11%, and she tipped 20\%20%. (the sales tax does not apply to the tip, and the tip is based on the price of the dinner before sales tax.)

The price of billing is $221.40.

Step-by-step explanation:

Since we have given that

Amount Zoe has paid in sales tax = $18.60

Rate of sales tax = 11%

So, Let the original price be 'x'.

According to question, it becomes,

Rate of tip = 20%

Amount of tip is given by

Amount after tip is given by

Hence, The price of billing is given by