<human>:  The price of a book was $400. If the book's price is decreased by 15% and then increased by 40%, what is the final price of the book?
<bot>: How much is the total price decrease? ** When the price of the book is decreased by 15%, the total price decrease is 15/100*$400=$<<15/100*400=60>>60
What is the new price of the book? ** The new price of the book becomes $400-$60 = $<<400-60=340>>340
What is the final price of the book? ** The price of the book is then increased by 40/100*340 = $<<40/100*340=136>>136
What is the final price of the book? ** The final price of the book is $340+$136 = $<<340+136=476>>476
#### 476