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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 708 milliliters of the drug, how many milliliters of compound A are needed?

 Apr 10, 2023
 #1
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The answer is 265 milliliters of compound A are needed.

 Apr 10, 2023
 #2
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5  +  7 ==12 - combined ratio of the 2 compounds

 

708 / 12 ==59 - constant ratio

 

59  x  5 ==295 mL of compound A will be needed

59  x  7==413 mL of compound B will be needed.

 Apr 10, 2023

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