LOS ANGELES - Amazon.com said Friday that publisher Simon & Schuster Inc. will make 5,000 more books available for the Amazon Kindle wireless reader, bumping to 125,000 the number of titles users can download and read.

The announcement came ahead of an address by Amazon.com Inc. Chief Executive Jeff Bezos at the BookExpo America convention in Los Angeles.

Bezos has said Kindle e-books now account for 6 percent of sales among the 125,000 titles available on the site in both electronic and print formats. The company did elaborate on that figure.

The online retailer cut the Kindle’s price by $40 to $359 on Tuesday but still won’t say how many have sold. The company also refuses to divulge the number of e-books it has sold.

Kindle launched last November and sold out in hours. Amazon sorted out its supply chain and manufacturing problems, and the device was back on sale in April.

Despite the price cut, the Kindle still costs more than Sony Corp.’s competing Reader, which retails for $299.