Acertain 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 684 milliliters of the drug, how many milliliters of compound a are needed?

There are 5 milliliters of compound A for every 7 milliliters of compound B.

So the ration between compound A and B will be:

A:B = 5:7

Total amount of drug = 684

Therefore, the amount of drug A needed will be:



Therefore, out of 684 milliliters 285 would be the compound A and the rest would be compound B