VinnyB wrote, on Tue, 24 Jun 2014 09:57:58 -0500:

No kidding. You got it completely wrong.

I think these are the equations, are they not?

a) liquid chlorine:
$cost/gallon x 1gallon/9.7pounds x 1/10.8% by wt available chlorine

b) liquid bleach:
$cost/gallon x 1gallon/9.0pounds x 1/5.7% by wt available chlorine

c) solids:
$cost/pound x 1/??% by wt available chlorine, as listed on the container