[
  "Cloth left = Original length minus Used length. Draw a bar model showing the whole 6 m, with a 2 1/6 m used portion and the remaining part as unknown.",
  "6 - 2 1/6 = 36/6 - 13/6 = 23/6 = 3 5/6.",
  "Tammie had 3 5/6 m of cloth left. Answer: 3 5/6 m (option B)."
]