Bruce wants to make 50 ml of an alcohol solution with a 12% concentration. he has a 10% alcohol solution and a 15% alcohol solution. which equation can bruce use to determine how much of the 10% alcohol solution he should use? 0.10x + 0.15(50 – x) = 50 + 0.12 0.10x + 0.15(50 – x) = 0.12(50) 0.10x + 0.15(50 – x) = 50 + 0.12 + 0.12(50) (0.10x)(0.15)(50 – x) = 0.12(50)