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A certain drug is made from only two ingredients: compound A and compound B. There are 5 milliliters of compound A used for every 7 milliliters of compound B. If a chemist wants to make 1056 milliliters of the drug, how many milliliters of compound A are needed?what is the answer?

Sagot :

If the proportion of compounds A and B is 5 to 7, we can calculate the amount of each compound in the total of 1056 using the equations:

[tex]\begin{gathered} A=\frac{5}{5+7}\cdot1056 \\ A=\frac{5}{12}\cdot1056 \\ A=440 \\ \\ B=\frac{7}{5+7}\cdot1056 \\ B=\frac{7}{12}\cdot1056 \\ B=616 \end{gathered}[/tex]

So the amount of compound A needed is 440 ml.

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