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A mixture containing 16% of a drug is combined to a 28% of a drug to obtain a 15 mL of 24% of a mixture. How many 16% of a drug should be added?
in Math by engr III (10.4k points) | 123 views

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16%28%24%
x15-x15

 

0.16(x) + 0.28(15-x) = 0.24(15)

0.16x + 4.2 - 0.28x = 3.6

0.12x = 0.6

x = 5

by cadet engr (310 points)
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