Answer :
x=child's ticket price
[tex]200(x+3)+100x=2100\\200x+600+100x=2100\\300x+600=2100\\300x=1500\\x=5[/tex]
So adult's ticket price would be:
[tex]x+3[/tex]
[tex]5+3=8[/tex]
[tex]200(x+3)+100x=2100\\200x+600+100x=2100\\300x+600=2100\\300x=1500\\x=5[/tex]
So adult's ticket price would be:
[tex]x+3[/tex]
[tex]5+3=8[/tex]