Question
One colouring book costs $20 at a shop. During a sale, for every 6 colouring books bought, the 7th colouring book can be bought at a discount of 15% off the original price. How many colouring books does Wesley buy if he pays $394 altogether?
4 m

Click button first when a symbol is required. X

One colouring book costs $20 at a shop. During a sale, for every 6 colouring books bought, the 7th colouring book can be bought at a discount of 15% off the original price. How many colouring books does Wesley buy if he pays $394 altogether?