SOLUTION: What quantity of 75 per cent acid solution must be mixed with a 25 solution to produce 480 mL of a 50 per cent solution?
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Question 208325
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What quantity of 75 per cent acid solution must be mixed with a 25 solution to produce 480 mL of a 50 per cent solution?
Answer by
rfer(16322)
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.75x+.25(480-x)=480*.50
.75x+120-.25x=240
.5x=120
x=240
240 ml of each