jplattimore jplattimore

17-11-2015
Mathematics

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4/7 of marbles are blue in 4/21 of marbles are red how many times more blue marbles do you have been red

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apologiabiology apologiabiology

17-11-2015

convert bottom number to same number
4/7 times 3/3=12/21
12/21=blue
4/21=red
how many more blue than red
12/21-4/21=8/21

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