Given:
Cost of each pizza including tax = $8.55
Number of pizzas = 4
Tip = 15%
To find:
Her total bill.
Solution:
We have,
Cost of 1 pizza including tax = $8.55
Cost of 4 pizza including tax =
=
It is given that she wanted to give a 15% tip. So, tip is 15% of $34.2.
Thus, the amount of tip is $5.13.
Now the total amount of bill is:
Therefore, the total amount of bill is $39.33.