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Tickets to a concert cost $15 online and $25 at the door. One hundred more people bought their tickets at the door than online. If ticket sales totaled $20,500, how many people bought their concert tickets online?

Respuesta :

Answer:

online= 450   at door= 550

Step-by-step explanation:

x = online   y= at door

y= x + 100

15x + 25y = 20,500

x = 450    y = 550

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