Question
In a book shop, a box of notebooks costs twice as much as a folder. Mrs Lu spent 15 of her money to buy 6 boxes of notebooks. She then spent 79 of her remaining money to buy some folders and had $28.80 left. How much does each folder cost?
4 m

Click button first when a symbol is required. X

In a book shop, a box of notebooks costs twice as much as a folder. Mrs Lu spent 15 of her money to buy 6 boxes of notebooks. She then spent 79 of her remaining money to buy some folders and had $28.80 left. How much does each folder cost?