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28 November, 17:26

The ratio of the number of adults to the number of students at the prom has to be 1:10. Last year there were 477 more students than adults at the prom. If the school is expecting the same attendance this year, how many adults have to attend the prom?

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  1. 28 November, 20:00
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    A / (a+477) = 1/10

    10a=a+477

    9a=477

    a=53

    53 adults need to attend prom in order to maintain a 1:10 ratio
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