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You work in a pharmacy that mixes different concentrations of saline solutions for its customers. The pharmacy has a supply of two​ concentrations, 0.50% and​ 2%. The function

y=100(0.02)+x(0.005)100+x

gives the amount x in milliliters of the​ 0.5% solution you must add to 100 milliliters of the​ 2% solution to form a new concentration y of saline solution. How many milliliters of the​ 0.5% solution must you add for the combined solution to have a concentration of

0.77​%?

 Feb 3, 2021
 #1
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y=100(0.02)+x(0.005)100+x       and you want y=.77

 

.77 = 100(.02) + x(.005)100  + x        and solve for x   (if that is the correct equation in your Q laugh )

 Feb 3, 2021

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