คณิตศาสตร์ มัธยมต้น มากกว่า 3 ปีที่แล้ว

Problem solving

I. *Rate Problem 1nele55 9 (5-6) Hilton University Drama club sold 70 tickets for a play. Student tickets cost $7 each; non-student tickets cost $10. If the total receipts were $541, find how many tickets of each type were sold.