A snake's head is one-tenth its length. If a snake is 10 feet long, calculate the length of the rest of its body minus the head.
A snake's head is one-tenth its length, which is 1/10*10 = <<1/10*10=1>>1 foot.
Since the snake's head is 1 foot, the rest of its body is 10-1 = <<10-1=9>>9 feet long.
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