Answer:
Step-by-step explanation:
125a + 65s = 1200
140a + 50s = 1230
-3500a - 1820s = -33600 Â
 3500a + 1250s = 30750
-570s = -2850
s = $5
student
125a + 65(5) = 1200
125a + 325 = 1200
125a = 875
a = $7 adult
the other situation means that they didn't do it right at all