Question 1057639
Two adults and three children.
Budget:  13 adult tickets, or {{{highlight_green(13p)}}}  dollars is their budget.


{{{p=2q}}}, the last part of the description.



Family See Two Movies:
How much money unspent?
{{{13p-2*2p-3*2q}}}
{{{13p-4p-6q}}}
{{{9p-6q}}}
substitution
{{{9p-6(p/2)}}}
{{{9p-3p}}}
{{{highlight(6p)}}}------how much is still unspent from original 13p budget.



This looks like they can see one more movie each; but I did not actually do the steps here for this last question.