In: Math
a broadway theatre has 600 seats, divided into orchestra, main, and balcony seating. orchestra seats sell for 50 main seats for 35 and balcony for 25. if all seats are sold the revenue to the threatre is 20900. if all the main and balcony seats are sold but only half the orchestra seats are sold the gross revenune is 17900 how many are there of each kind of seat