[
  "Draw a bar model: the amount to transfer is half the difference between the two cups.",
  "Difference = 8 - 3 = 5 units. Half the difference = 2.5 units = 50 ml. So 1 unit = 50 / 2.5 = 20 ml. Cup A at first = 8 x 20 = 160 ml.",
  "After pouring 50 ml: Cup A = 160 - 50 = 110 ml. Each cup had 110 ml in the end."
]