Someone answer and explain ILL MARK BRAINLIEST
1 answer:
Answer:
230 were sold at the door
170 were sold in advance
Step-by-step explanation:
i'm not entirely sure if this is the proper way to do it but it has the correct answer:
x=at door y=in advance
x+y=400
3x+2y=1030
y=-x+400
2y=-3x+1030
y=-3/2x+515
-x+400=-3/2x+515
x=230 y=170
hope this helps :) have a nice day !!
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