A solution is made by dissolving 100g of a mixture of sugar (C12H11O11) and NaCl in 500g of water, which has a freezing point of -2.25 degrees celcius. What is the mass of each individual solute? Assume NaCl completely dissociates.

I've tried using the freezing point depression equation but I think my calculations are being thrown off since there are 2 solutes here. I'm thinking to treat sugar and NaCl together as a total solute molality, but I don't know if each solute should be handled separately. Thank you for any help you can provid

Question

A solution is made by dissolving 100g of a mixture of sugar (C12H11O11) and NaCl in 500g of water, which has a freezing point of -2.25 degrees celcius. What is the mass of each individual solute? Assume NaCl completely dissociates. 

I've tried using the freezing point depression equation but I think my calculations are being thrown off since there are 2 solutes here. I'm thinking to treat sugar and NaCl together as a total solute molality, but I don't know if each solute should be handled separately. Thank you for any help you can provid