here i don't know if this can help you but hey i tried.
<h3>
its must be 2:9</h3><h3>James wins more often.</h3>
i hope that was helpful
~best wishes
2.75 x 100 / .20 = 13.75
double check
$13.75 x 0.25 = $2.75
so answer
The bill was $13.75 <span>for lunch before the tip added</span>
I believe that x can be any real number because the equations are equal to each other.