Let x be the amount each friend pays .
There are five friends contributing ,so 5x will be the total money collected .
It needs to equal the price plus the tax, 210 + 15 = 225
So the equation becomes,
![5x = 210 + 15](https://img.qammunity.org/2019/formulas/mathematics/middle-school/b0gvg73nws0vjtqw9d96wgpq350jb9cyyn.png)
5x = 225
dividing right side by 5, we have
x = 225/5 = 45
Answer: So each frien pays $45.