adult tickets for the school musical sold for $3.50

[ambyboo]

Adult tickets for the school musical sold for $3.50 and student tickets sold for $2.50. Three hundred twenty-one tickets were sold altogether for $937.50. How many of each kind of ticket were sold?

 

[Denis]

Adult tickets for the school musical sold for $3.50 and student tickets sold for $2.50. Three hundred twenty-one tickets were sold altogether for $937.50. How many of each kind of ticket were sold?

a = adult tickets, s = student tickets
a + s = 321 ; so s = 321 - a [1]
3.5a + 2.5s = 937.5 [2]

Substitute [1] in [2]
If you can't finish, you need your teacher, not us.

 

[ambyboo]

Thanks I was able to figure the rest of it out.