70 mL x .5 Volume 2 = 70 - Volume 1 V1 x .4 + (70-V1) x .75 = 70 mL x .5 solve for V1 Solution 1 = 50mL Solution 2 = 20mL Pls check if correct; x = first solution y = 2nd solution .4x + .75y = .5(70)
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