Question 1108035
<pre>
                 PRICE          QUANT.         COST
ALMONDS          12                d           12d
WALNUTS           9               2d            9*2d
RAISINS           5               3d            5*3d
Total or max.                                   15
</pre>

If using all the $15 she plans to spend, then
{{{12d+18d+15d=15}}}.

-

{{{45d=15}}}

{{{d=15/45}}}

{{{d=1/3}}}{{{pounds}}}, which is {{{5&1/3}}} {{{ounces}}}.
Use this to evaluate for the walnuts and the raisins.