Question
In a store, a box of files costs thrice as much as a colouring book. Mrs Yong spent 15 of her money to buy 8 boxes of files. She then spent 79 of her remaining money to buy some colouring books and had $44.80 left. How much does each colouring book cost?
4 m

Click button first when a symbol is required. X

In a store, a box of files costs thrice as much as a colouring book. Mrs Yong spent 15 of her money to buy 8 boxes of files. She then spent 79 of her remaining money to buy some colouring books and had $44.80 left. How much does each colouring book cost?