Please Algebra 1
posted by JJ on .
Roberta sold fifty tickets for the school play. Roberta sold ten more student tickets than adult tickets. How many student tickets did Roberta sell?
From this result, if the total cost of a student ticket was threefourths the cost of an adult ticket, and Roberta collected a total of 212.50, what was the total cost of a student ticket?

See your other post, and stop reposting questions. I told you this the other day. You will be banned if you keep doing this.