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03-07-2019
Mathematics

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A certain drug is made from only two ingredients: compound A and compound B. There are 3 milliliters of compound A used for every 5 milliliters of compound B. If a chemist wants to make 680 milliliters of the drug, how many milliliters of compound A are needed?

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Аноним Аноним

03-07-2019

Answer:

255 milliliters.

Step-by-step explanation:

The fraction of Compound A in the mixture = 3 / (3+ 5) = 3/8.

So the amount of A to make 680 mls of the drug

= (3/8) * 680

= 255 milliliters.

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