[
  "Draw a bar model: divide 160 into 8 equal parts. The morning sale is 5 of those parts.",
  "160 / 8 = 20 packets per part. Morning sale = 5 x 20 = 100 packets.",
  "Answer: 100 packets. (Note: the given options do not include 100; the question text asks \"in the morning\" but the answer key appears to total morning + afternoon = 145.)"
]