Problema Solution
university theater sold 506 tickets for a play. tickets cost $21 per adult and $12 per senior citizen. if the total receipts were $7359, how many senior citizen tickets were sold?
Answer provided by our tutors
Total number of tickets, t = 506
Number of adult tickets sold = a
Number of senior tickets sold = s
Total receipt, r = 7359
(a*12 + s*21) = 7359
12s + 21a = 7359 ------------1
a + s =506----------------2
Multiplying equation 2 by 21 and subtrating equation 1 from 2, we get
9a = 10626 - 7359
a = 363