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80 is 40% of what number?

User Jvasak
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x-number\\\\40\%x=80\\\\40\%=(40)/(100)=0,4\\\\0,4x=80\ \ |:0,4\\\\x=(80)/(0,4)=200\\\\ 80\ is\ 40\% \ of\ 200.
User B Douchet
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