Question
There are 800 marbles in a bag. Given that there are three times as many grey marbles as brown marbles and twice as many black marbles as grey marbles, how many marbles in the bag are grey?
4 m

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There are 800 marbles in a bag. Given that there are three times as many grey marbles as brown marbles and twice as many black marbles as grey marbles, how many marbles in the bag are grey?