Question 1206385
<pre>

A female chemist mixes 1500 ccs of an 8% solution with 300 ccs 
of a 2% solution.  What percent solution is her mixture?

{{{1500(0.08)+300(0.02) = 1800x}}}
{{{120+6=1800x}}}
{{{126=1800x}}}
{{{126/1800=x}}}
{{{0.07=x}}}

Answer: a 7% solution.

Edwin</pre>