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If 90 students were surveyed and 50 said they would buy a wristband, how many wristbands should Monty order for the school of 1800 students?

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miatortilla2

He should buy 1000 wristbands.

Since 50/90 students said they would buy a wristband, we can set up this proportion.

[tex]\frac{50}{90}[/tex]  [tex]\frac{x}{1800}[/tex]

multiply 50 * 1800 divided by 90 = 1000

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