Question 740881
<pre>
The given described information:

                         PRICE        POUNDS          COST
s. m. scales              3.50
b. w. barnackles          5.00         
mixture                   4.50          45               
</pre>

<pre>
                         PRICE        POUNDS          COST
s. m. scales              3.50         45-b          3.5(45-b)
b. w. barnackles          5.00           b            5b
mixture                   4.50          45           3.5(45-b)+5b    
</pre>
Relating cost per pound to the desired price
{{{3.5(45-b)+5b=4.5*45}}}

{{{3.5*45-3.5b+5b=4.5*45}}}

{{{1.5b+3.5*45=4.5*45}}}

{{{1.5b=45}}}

{{{highlight(b=30)}}}
30 pounds of baby whale barnacles, 15 pounds sea monster scales.