Question
One guide book costs $10 at a shop. During a sale, for every 6 guide books bought, the 7th guide book can be bought at a discount of 20% off the original price. How many guide books does Brandon buy if he pays $458 altogether?
4 m

Click button first when a symbol is required. X

One guide book costs $10 at a shop. During a sale, for every 6 guide books bought, the 7th guide book can be bought at a discount of 20% off the original price. How many guide books does Brandon buy if he pays $458 altogether?