SOLUTION STEPS:
  1. Brother bag = 2 x 1016 = 2032 g. Total = 3048 g (constant).
  2. After: Alfred = 1 unit, brother = 3 units. 4 units = 3048, 1 unit = 762 g.
  3. Alfred transfers 1016 - 762 = 254 g to his brother.