Answer:
5,500 tickets for $10 each, 2,400 tickets for $20 each.
Explanation:
We can solve this system of equations to find the values of (x) and (y)
(10x + 10y = 79000).
subtract this equation from the second equation:
(10y = 127000 - 79000 = 48000).
(y = 48000 / 20 = 2400).
Substitute (y = 2400) into the first equation:
(x + 2400 = 7900),
which gives (x = 7900 - 2400 = 5500).
5500 tickets were sold for $10 each, and 2400 tickets were sold for $20 each.