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the ratio of the number of adults to the 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 prom ?



Answer :

luana
[tex]x-\ number\ of\ adults\\\\ (x+477)-\ number\ of\ students\\\\ Ratio:\\ \frac{adults}{students}=\frac{1}{10}\\ \frac{x}{x+477}=\frac{1}{10}\\ 10x=x+477\\ 10x-x=477\\9x=477\ \ \ |:9\\x=53.\\\\There\ will\ be\ 53\ adults\ at\ the\ prom.[/tex]

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