Question
There are 729 marbles in a bag. Given that there are two times as many purple marbles as grey marbles and thrice as many brown marbles as purple marbles, how many marbles in the bag are purple?
4 m

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There are 729 marbles in a bag. Given that there are two times as many purple marbles as grey marbles and thrice as many brown marbles as purple marbles, how many marbles in the bag are purple?