You need a 55% alcohol solution. On hand, you have a 715 mL of a 80% alcohol mixture. How much pure water will you need to add

Question

You need a 55% alcohol solution. On hand, you have a 715 mL of a 80% alcohol mixture. How much pure water will you need to add to obtain the desired solution? 
You will need mL of pure water to obtain mL of the desired 55% solution.

Kunduz · Accepted Answer

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