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

Mathematics

1 answer:

valina [46]2 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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