<human>:  Peter has 20 books. He has read 40% of them. His brother has read 10% of them. How many more of these books has Peter read than his brother?
<bot>: How many books has Peter read? ** Peter has read 8 of these books because 20 x .4 = <<20*.4=8>>8
How many books has Peter's brother read? ** His brother has read 2 of these books because 20 x .1 = <<20*.1=2>>2
How many more books has Peter read than his brother? ** Peter has read 6 more books than his brother because 8 - 2 = <<6=6>>6
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