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45 is 20% of what number?
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45 is 20% of what number?

User Geofrey
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x-\ number\\\\ 20\%x=45\\\\ (20)/(100)x=45\\\\ 0.2x=45\ \ \ | divide\ by\ 0.2\\\\ x=225\\\\ 45\ is\ 20\% \ of\ 225.
User HaroldFinch
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