Barnes & Noble Inc. says it’s reducing by $20 the price for its less-expensive model Nook tablet computer, undercutting by that amount the rival Kindle Fire sold by Amazon.com. The biggest U.S. traditional book retailer said Sunday it’s cutting the price for the 8-gigabyte model Nook tablet to $179 from the current $199. The Kindle Fire, with 6 gigabytes of memory, sells for $199. Barnes & Noble also announced a $50 reduction, to $199 from $249, for its 16-gigabyte Nook tablet. Read the full story at USA Today.