Answer:
3,267
Explanation:
Fro the statement you can write the following equations:
x+y= 4,356 (1)
y= 3x (2)
x= afternoon perforance
y= evening perforance
Then, you can replace 2 in 1 and isolate x:
x+3x= 4,356
4x= 4,356
x= 4,356/4= 1,089
y= 3x= 3(1,089)= 3,267
According to this, the answer is that for the evening performance 3,267 tickets were sold.