When 4,140 people attended a concert hall is 90% full. Calculate the maximum amount of people needed to make the hall filled.

asked Jul 19, 2018 166k views

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when 4,140 people attended a concert hall is 90% full. Calculate the maximum amount of people needed to make the hall filled.

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If 4140 ppl fill a concert hall 90% full,
=> 4140/x=.9 for x-maximum number
=>x=4140(10)/9=x

Derek Slife answered Jul 24, 2018

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