text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_20866024_3 (model_designation VARCHAR, gvw__kg_ton_ VARCHAR, axle_ratio VARCHAR)
  ### Question:
  What's the model designation of the model with GVW of 2828/2.78 kg/ton and axle ratio of 9/47?
  ### Answer:
  SELECT model_designation FROM table_20866024_3 WHERE gvw__kg_ton_ = "2828/2.78" AND axle_ratio = "9/47"