This Lesson (Two types of tickets at two different prices...) was created by by solver91311(24713)  : View Source, ShowAbout solver91311: Logistics Engineer, Trainer, Public Speaker, US Navy - retired. E-mail me at reecejo@gmail.com, $20/hr, $2-5 per detailed solution depending on complexity. PayPal
If items are sold for a price of each, items are sold for a price of each, the total, of items were sold, and the total revenue from the sale was , then:
Solve the 2X2 system by substitution:
John

My calculator said it, I believe it, that settles it
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