Cancelling out both the -6 we get 12=0 which is not true, hence the equation is incorrect.
4.68/12 = 0.39 per ticket
4.50/10 = 0.45 per ticket.
So, we are better off taking 12 tickets for $4.68
Hope this helps!
260 students is the prediction for how many sweatshirts will be sold so no they will not sell all of them
