Question
One novel costs $10 at a shop. During a sale, for every 3 novels bought, the 4th novel can be bought at a discount of 30% off the original price. How many novels does Perry buy if he pays $474 altogether?
4 m

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One novel costs $10 at a shop. During a sale, for every 3 novels bought, the 4th novel can be bought at a discount of 30% off the original price. How many novels does Perry buy if he pays $474 altogether?