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Vesna [10]
3 years ago
11

Please help I don't know what to do for number 40

Mathematics
1 answer:
valina [46]3 years ago
8 0
X - tickets for adults
y - for students

6x+4.5y=1155\\
x+y=240\\\\
6x+4.5y=1155\\
-4.5x-4.5y=-1080\\
----------\\
1.5x=75\\
x=50\\\\
50+y=240\\
y=190
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