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  1. D

    Pre Cal Acidic Solutions / Mixture Problem?

    Hi I need help on this question. I have the answer from an answer key but I have no idea how to do the math. The question is: One hundred gallons of a 60% acid solution are obtained by mixing a 75% solution with a 50% solution. How many gallons of each must be used to obtain the desired...
  2. D

    how do they form the babbys?

    how is babby formed how girl get pragnent
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