Question
In a stationery kiosk, a box of notebooks costs twice as much as a guidebook. Mrs Ma spent 15 of her money to buy 7 boxes of notebooks. She then spent 47 of her remaining money to buy some guidebooks and had $86.40 left. How much does each guidebook cost?
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In a stationery kiosk, a box of notebooks costs twice as much as a guidebook. Mrs Ma spent 15 of her money to buy 7 boxes of notebooks. She then spent 47 of her remaining money to buy some guidebooks and had $86.40 left. How much does each guidebook cost?