[
  "Susie's bag = Jelilah's bag + extra mass. Convert both mixed numbers to fractions with a common denominator. LCM of 4 and 10 is 20.",
  "2 1/4 = 9/4 = 45/20. 1 7/10 = 17/10 = 34/20. 45/20 + 34/20 = 79/20.",
  "79/20 = 3 19/20 kg. Answer: 3 19/20 (option A)."
]