Tickets to a local play were sold for $6 on Saturday and $4 on Sunday. If 2,550 tickets were sold at a total value of $12,600, how many attended the play on Saturday and Sunday?

Tickets to a local play were sold for $6 on Saturday and $4 on Sunday. If 2,550 tickets were sold at a total value of $12,600, how many attended the play on Saturday and Sunday?