Question
Mark spent 12 of his allowance to buy a skirt. He spent 15 of his allowance to buy a pair of shirts. Given that Mark had $69 left, how much allowance did he have at first?
4 m

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Mark spent 12 of his allowance to buy a skirt. He spent 15 of his allowance to buy a pair of shirts. Given that Mark had $69 left, how much allowance did he have at first?