Question
In a shop, a box of pens costs twice as much as a colouring book. Mrs Chan spent 15 of her money to buy 2 boxes of pens. She then spent 37 of her remaining money to buy some colouring books and had $19.20 left. How much does each colouring book cost?
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In a shop, a box of pens costs twice as much as a colouring book. Mrs Chan spent 15 of her money to buy 2 boxes of pens. She then spent 37 of her remaining money to buy some colouring books and had $19.20 left. How much does each colouring book cost?