<human>:  Lexie is 6 years older than her brother and her sister is twice her age. If Lexie is 8, what is the age difference between her brother and her sister?
<bot>: How old is Lexie's brother? ** Lexie's brother is 8 - 6 = <<8-6=2>>2 years old.
How old is Lexie's sister? ** Her sister is 8 x 2 = <<8*2=16>>16 years old.
What is the age difference between her brother and sister? ** The age difference between her brother and sister is 16 - 2 = <<16-2=14>>14 years.
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