Question 1003698
Mix with HOW MANY pints of solution?  You find what that is.  Until then, let it be p pints of 
60% developer solution.


Want result of 18% developer solution, by adding some v pints of water.

{{{(0.6p)/(v+p)=0.18}}}


{{{0.6p=0.18v+0.18p}}}

{{{0.18v=0.6p-0.18p}}}

{{{v=(0.48p)/0.18=(48/18)p}}}

{{{v=(24/9)p=highlight((8/3)p)}}}