from 100 % I wanna get 70%   (11/09/2018, 1:59 PM)

how much water I have to use ,to get from 100% liquid to get 70%

 


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11/09/2018, 1:59 PM from 100 % I wanna get 70%
11/09/2018, 3:46 PM     Re: from 100 % I wanna get 70%