I think 725 would be the correct answer
Given the system of equations
The graph shows the solotion of the equations
The point of intersection of the two lines is the solution of the equations
Therefore, the solution is
In plain and short, we simply divide the "whole" by the sum of the ratios, and distribute accordingly.
now, 100% is the whole of any amount, so we'll divide 100% by (3+1).