Question
A packet consisted of 201 brown, black and gold marbles. There were twice as many gold marbles as black marbles, and 15 more black marbles than brown marbles. How many black marbles were there in the packet?
4 m

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A packet consisted of 201 brown, black and gold marbles. There were twice as many gold marbles as black marbles, and 15 more black marbles than brown marbles. How many black marbles were there in the packet?