A high school put on their annual musical The students sold
     A high school put on their annual musical. The students sold 500 tickets for a value of $3040. The orchestra seats cost $8 and balcony seats cost $5, how many seats of each kind were sold?   
  
  Solution
let x nos.of orchestra seats and y nos. of balcony seats
total sold 500 tickets:
x +y = 500 ----(1)
8x +5y = 3040 ----(2)
solve both equations to get x and y:
multiply equation 1 by 8:
8x +8y = 4000
8x +5y = 3040
-----------------------(subtract)
3y = 960
y = 320 balcony seats
x = 180 tickets orchestra seats

