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OpenStudy (amy2012):
word problem. HELP!!! See attached
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OpenStudy (amy2012):
OpenStudy (wolf1728):
You have 270 ml of 20% alcohol solution. How many ml of pure alcohol must be mixed with this to make a 55% alcohol solution? 270 ml of 20% alcohol we must add "x" ml of100% alcohol to make a 55% alcohol solution .20 * 270 + 1.00x = .55 * (270 + x) 54 + x = 148.50 + .55x .45x = 94.5 x = 210 ml of 100% alcohol to be added See section B on this page: http://www.1728.org/mixture.htm
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