Question
One textbook costs $20 at a shop. During a sale, for every 5 textbooks bought, the 6th textbook can be bought at a discount of 20% off the original price. How many textbooks does Asher buy if he pays $408 altogether?
4 m

Click button first when a symbol is required. X

One textbook costs $20 at a shop. During a sale, for every 5 textbooks bought, the 6th textbook can be bought at a discount of 20% off the original price. How many textbooks does Asher buy if he pays $408 altogether?