Answer:
$13.05
Explanation:
Given: Mark and his 3 friends = 4 Total cost = $52, percent off: 20%
To find: How much each person would pay if they split the bill evenly.
Solution:
Firstly, since they left the server a 20% tip, multiply 20% by the total cost. Convert it to a fraction. Note: you're adding 20% to the total cost.
+
![(52)/(1)](https://img.qammunity.org/2022/formulas/mathematics/high-school/nlfp96fablffzx05wx0y1ntawbzryl6uho.png)
=
![_(52.2)](https://img.qammunity.org/2022/formulas/mathematics/high-school/azmip2t5uzx93oh24vbzh64ksrxjrgni1t.png)
Now, that is done, let's divide the newly found cost by the four friends.
![\sqrt[4]{52.2}](https://img.qammunity.org/2022/formulas/mathematics/high-school/x3wsfcn51627epocq2cs55qc6f44lzeed0.png)
=
So, they would pay $13.05 evenly.