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John has 30 marbles, 18 of which are red and 12 of which are blue. Jane has 20 marbles, all of them either red or blue. If the ratio of the red marbles to the blue marbles is the same for both John and Jane, then John has how many more blue marbles than Jane?
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Oct 27, 2021
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Mathematics Form 1
by
korontoo
rates
ratio
percentages and proportion
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Nov 12, 2021
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CynthiaWanjiku
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