Question
In a stationery shop, a box of files costs thrice as much as a colouring book. Mrs Tay spent 18 of her money to buy 3 boxes of files. She then spent 25 of her remaining money to buy some colouring books and had $56.70 left. How much does each colouring book cost?
4 m

Click button first when a symbol is required. X

In a stationery shop, a box of files costs thrice as much as a colouring book. Mrs Tay spent 18 of her money to buy 3 boxes of files. She then spent 25 of her remaining money to buy some colouring books and had $56.70 left. How much does each colouring book cost?