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The problem is 
how many people must attend the third show so that the average attendance for three shows is 3000? And the other show attendance numbers are 2580, and 2920

Sagot :

Luanaidn
[tex]average=\frac{sum\ of\ attendance}{amount\ of\ shows}\\\\ average=3000\\\\ 3000=\frac{2580+2920+third\ show}{3}\ \ \ |*3\\ 9000=2580+2920+third\ show\\ 9000=5500+third\ show\ \ \ |Subtract\ 5500\\ 3500=third\ show\\\\ \textbf{3500\ people\ must\ attend\ the\ third\ show.} [/tex]
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