Question
A school purchased some brown, black and white pens. In total, the school purchased four times as many brown as black pens and 40 more white pens than black pens. Given that the school purchased 69 black pens, how many pens did the school purchase in total?
4 m

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A school purchased some brown, black and white pens. In total, the school purchased four times as many brown as black pens and 40 more white pens than black pens. Given that the school purchased 69 black pens, how many pens did the school purchase in total?