Question 881538
{{{(pureAntifreeze)/(totalsolutionVolume)=FractionOfAntifreeze}}}


The type of problem question you have is common as an exercise and you should study this lesson which explains HOW to solve it:


<a href="http://www.algebra.com/tutors/Two-Part-Mixture-with-one-material-quantity-unknown.lesson?content_action=show_dev">Mixture: one material quantity unknown </a>