a movie theater sells tickets for $9.00 each. Senior citizens receive a discount of $3.00. One evening the theater sold 636 tickets and took in $4974 in revenue. How many tickets were sold to senior citizens? [Hint: subtract the potential answer.]

Question

A. 386
B. 77
C. 250
D. 559

im confused... how do u solve this? please help

Answer 1

let the number of adult tickets be a
let the numb of senior tickets be s
a+s = 636 ,
so a = 636 - s

also,
9a + 6s = 4974
9(636-s) + 6s = 4974
5724 - 9s + 6s = 4974
-3s = -750
s = 250

Answer 2

OMG!!!! THANK YOU SOOOOO MUCH!!!!
i WAS SO LOST IT WASN'T EVEN FUNNY!!!