SOLUTION: How much water must be mixed with pints of solution that is 60% developer to produce a mixture that is 18% developer? 14 pt 19 2/3 pt 20 pt 14/1/3 pt

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: How much water must be mixed with pints of solution that is 60% developer to produce a mixture that is 18% developer? 14 pt 19 2/3 pt 20 pt 14/1/3 pt       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1003698: How much water must be mixed with pints of solution that is 60% developer to produce a mixture that is 18% developer?
14 pt
19 2/3 pt
20 pt
14/1/3 pt
Found 3 solutions by mananth, ikleyn, josgarithmetic:
Answer by mananth(16949) About Me  (Show Source):
Answer by ikleyn(53742) About Me  (Show Source):
You can put this solution on YOUR website!
.
How much water must be mixed with pints of solution that is 60% developer to produce a mixture that is 18% developer?
14 pt
19 2/3 pt
20 pt
14/1/3 pt
~~~~~~~~~~~~~~~~~~~~~~~~~~~~


It looks like a key numerical value, necessary for the solution, is inadvertently missed in the post.



Answer by josgarithmetic(39790) About Me  (Show Source):
You can put this solution on YOUR website!
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.
%280.6p%29%2F%28v%2Bp%29=0.18

0.6p=0.18v%2B0.18p
0.18v=0.6p-0.18p
v=%280.48p%29%2F0.18=%2848%2F18%29p
v=%2824%2F9%29p=highlight%28%288%2F3%29p%29