<PRE><B>Question 1157244</B>
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She manages to sell 12 tins of popcorn and 21 tubs of cookies for a total of $320.55 on her first day of sales. The second day she ends up selling more. She sells 15 tins of popcorn and 32 tubs of cookies for a total of $447.55.
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p, popcorn tins price
c, tubs of cookies price


{{{system(12p+21c=320.55,15p+32c=447.55)}}}


5*E1 and 4*E2:
{{{system(60p+105c=1602.75,60p+128c=1790.2)}}}

.

.
{{{c=8.15}}}    AND  {{{p=12.45}}}</PRE>