23-08-2014
Mathematics

Answered

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

Please help I don t know what to do for number 40 class=

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konrad509 konrad509

23-08-2014

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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