I theater sells tickets for a concert. Tickets for lower-level seats sell for $35 each and tickets for upper-level seats sell for $25 each. The theater sells 350 tickets for $10,250 how many tickets of each type or sold?
a*25+b*35=10250 a   +b   = 350     | * -25 25a  + 35b= 10. 250 -25a  -25 b= -8.750 ------------------------------        10b = 1500      b=1500:10       b=150 tickets cost $35       a= 350-150      a= 200 tickets cost $25Â
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