<human>:  Joe has twice as many cars as Robert. He sells 20% of them and gives away twice as many cars as the number he sold to his mother. If Robert has 20 cars, how many cars does joe remain with after selling and giving some to his mother?
<bot>: How many cars does Joe have? ** If Robert has 20 cars, and Joe has twice as many cars as Robert, Joe has 2*20 = 40 cars.
How many cars does Joe sell? ** He then sells 20/100*40=<<20/100*40=8>>8 cars from his car collection.
How many cars does Joe remain with? ** After selling 8 cars, Joe remains with 40-8=<<40-8=32>>32 cars.
How many cars does Joe give away? ** Joe then gives away twice as many cars as the number he sold to his mother, a total of 2*8=<<2*8=16>>16 cars.
How many cars does Joe remain with? ** The number of cars that Joe has remaining after giving 16 cars to his mother is 32-16=<<32-16=16>>16
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