Adult tickets to a play cost $2.25 each and student tickets cost $1.75 each. Suppose there are twice as many student tickets sold as adult tickets. If the income from the play was $1,150, how many of each type of ticket were sold?

Answer 1

A = 2S

2.25A + 1.75S = 1150

Substitute 2S for A and solve for S, then A.