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

Please Help I Dont Know What To Do For Number 40 class=

Sagot :

Konrad509idn
x - tickets for adults
y - for students

[tex]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[/tex]
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