Jameson has 20 medals. Five of the medals are for the track. He has two times as many swimming medals as track medals. The rest of the medals are for badminton. How many badminton medals does he have?
Jameson has 5 x 2 = <<5*2=10>>10 medals for swimming.
He has a total of 5 + 10 = <<5+10=15>>15 medals for track and swimming.
Thus, he has 20 - 15 = <<20-15=5>>5 medals for badminton.
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