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19-11-2014
Mathematics

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12 is 25% of what number using a ratio table

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apologiabiology apologiabiology

19-11-2014

% means 'parts out of 100' so
25%=25/100

is 12 is 25 parts out of 100 of a number
so 12=(25/100)x
25/100 simplifies to 1/4
or if 12=(1/4)x
we multiply both sides by 4 and get
48=1x

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