text: def aumentar(n, p):
      a = n * (p / 100)
      return a + n
  
  
  def diminur(n , p):
      d = n * (p / 100)
      return n - d
  
  
  def dobro(n):
      n *= 2
      return n
  
  
  def metade(n):
      n /= 2
      return n