Question 1085201
c, children
a, adults
Ticket Sales, $231


{{{6c+15a=231}}}


-

{{{(1/3)(6c+15a)=231/3}}}

{{{highlight_green(2c+5a=77)}}}
You want to find any whole-number solutions for a and c.


{{{c=(77-5a)/2}}}
You should be able to find a few odd whole numbers for a which give reasonable values for c.  Even values for a will not work.

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A few possibilities:

a        c
--------------------
1       36
3       31
5       26
.
any others?
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