SOLUTION: How would you write a system of equations to find the concentration of salt in solution A and B when 3mm of solution A are mixed with 3mm of solution B and the result is a 40% salt

Question 520377: How would you write a system of equations to find the concentration of salt in solution A and B when 3mm of solution A are mixed with 3mm of solution B and the result is a 40% salt solution, and when 4mm of solution A are mixed with 2mm of solution B and the result is a 35% salt solution?
I was thinking 3x+3y=.4; 4x+2y=.35 but it doesn't seem right?
I would be very appreciative if someone could help me thank you!
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
your equations are fine

just solve the system for the results
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