A 3-component mixing process for emulsion production operates in a continuous state. The product requirement is 0.3 mass fraction of A, 0.45 of B and the rest of C. This emulsion must be fed into a cooling system at 500 kg/h, with a relative density of 1.5. Streams feed the stirrer as below, determine the flow rates of streams 1, 2 and 3. Ps: I think the professor made a mistake on the image showing molar fraction, but asking for mass fraction!

Stream	XA	XB	XC
1	0,9	0,1	0
2	0,4	0	0,6
3	0	0,9	0,1
4	0,3	0,45	0,25

ya.yb, ya.yc, , , , yb3.yC3