A concert promoter needs to make $63,600 from the sale of 1720 tickets. The promoter charges $30 for some tickets and $50 for the others. Let x represent the number of $30 tickets and y represent the number of $50 tickets. (a) Write an equation that states that the sum of the tickets sold is 1720. Correct: Your answer is correct. (b) Write a formula for how much money is received from the sale of $30 tickets? $ Incorrect: Your answer is incorrect. (c) Write a formula for how much money is received from the sale of $50 tickets? $ Incorrect: Your answer is incorrect. (d) Write an equation that states that the total amount received from the sale is $63,600. Correct: Your answer is correct. (e) Solve the equations simultaneously to find how many tickets of each type must be sold to yield the $63,600. x = 1120 Correct: Your answer is correct. y = 600 Correct: Your answer is correct.