A concert promoter needs to make $53,600 from the sale of 1980 tickets. The promoter charges $20 for some tickets and $40 for the others. Let x represent the number of $20 tickets and y represent the number of $40 tickets.

A concert promoter needs to make $53,600 from the sale of 1980 tickets. The promoter charges $20 for some tickets and $40 for the others. Let x represent the number of $20 tickets and y represent the number of $40 tickets. (a) Write an equation that states that the sum of the tickets sold is 1980. (b) Write a formula for how much money is received from the sale of $20 tickets? (c) Write a formula for how much money is received from the sale of $40 tickets? (d) Write an equation that states that the total amount received from the sale is $53,600. (e) Solve the equations simultaneously to find how many tickets of each type must be sold to yield the $53,600. x = y =