Alligation calculation missing information
how many milliters of a 50% stock solution is needed to prepare 150 ml of a 30% solution? dont understand.
Reply (by Keith)
I think what is confusing about this is that you dont see a lower number concentration to mix with the 50%.
So, what you need to know is that you Always have 0%
to work with.
So now, work this (Alligation
) problem with 50% and 0%, working to make 30% solution.