Question 992960
x is how many kids
y is how many adults


{{{system(x+y=335,1.5x+4y=940)}}}


Various ways to go...  Multiply the ticket count equation's members by 4 to prepare for elimination of y.


{{{system(4x+4y=1340,1.5x+4y=940)}}}

{{{(4x+4y)-(1.5x+4y)=1340-940}}}

{{{2.5x=400}}}

{{{x=4000/25}}}

{{{x=40*100/25}}}

{{{highlight(x=160)}}}
{{{highlight(y=335-160=highlight(175))}}}