[
  "The word 'of' means multiply. To find 3/4 of 1/2 kg, multiply the two fractions: (3/4) x (1/2).",
  "3/4 x 1/2 = (3 x 1)/(4 x 2) = 3/8. The fraction 3/8 is already in simplest form.",
  "Mrs Kway-kway used 3/8 kg of sugar. Answer: 3/8 kg (option C)."
]