Respuesta :
Answer:
Step-by-step explanation:
10.5a + 3.75b = 2071.50
b = 82 students
Substitute 'b' value in the equation
10.5a + 3.75 * 82 = 2071.50
10.5a + 307.5 = 2071.50
10.5a = 2071.50 - 307.5
10.5a = 1764
Divide both sides by 10.5
a = 1764/10.5
a =17640/105
a= 168
168 adult tickets were sold