What volume of water should be used to make a saturated solution with 150 grams of solute at 30 degrees?

According to the given graph, at 30 degrees, the solution is saturated with 200g of solute per 100mL of water.
It means that if we have 150 grams of solute:
[tex]150g\cdot\frac{100mL}{200g}=75mL[/tex]75mL should be used to have a saturated solution.