<PRE><B>Question 528002</B>
Total tickets sold = 13,900
Tickets sold for above 8 years old = x
Tickets sold for under 8 years = 13,900-x
Cost of a ticket above 8 years old = $20
Cost of a ticket under 8 years old = $5
Total sell = $197,000


(Tickets sold for above 8 years old)* (Cost of a ticket above 8 years old)+(Tickets sold for under 8 years)*(Cost of a ticket under 8 years old) = Total sell
x*20+(13,900-x)*5=197000
20x+69500-5x=197000
20x-5x=197000-69500
15x=127500
x=127500/15
x=8500


Tickets sold for above 8 years old = 8500
Tickets sold for under 8 years = 13,900-8500 = 5400


Check
=======
5400 * 5 + 8500 * 20 = 197000
27000+170000=197000
197000=197000
</PRE>