In a box the ratio of red marbles to blue marbles is 7:4.Then how many marbles are present in the box ?
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red marbles:blue marbles
7:4
so the total number of marbles present in the box=7x+4x =>11x
the total number of marbles =>11
7:4
so the total number of marbles present in the box=7x+4x =>11x
the total number of marbles =>11
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