How many ml of a 30% saline solution must be mixed with 5 ml of pure water to make a 20% solution? Here's the formula if your confuse
(amount)(%)+(amount)(%)=(total amount)(%)

I've been stuck on this problem for 3 hours and I can't figure it out.
Please Show your work Step-by-step, Thanks, and no links because they always pop up as inappropriate sites. If you give me a link I will not mark you brainless, and like/vote your answer. THANKS!

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