Answer:Asked: How many kg of rice were left?Given:- 4 3/4 kg of rice.- 1/2 of it was cooked.Process:1. Convert 4 3/4 kg to an improper fraction: 19/4 kg.2. Calculate 1/2 of 19/4 kg: 19/8 kg.3. Subtract 19/8 kg from 19/4 kg (convert 19/4 to 38/8): 38/8 - 19/8 = 19/8 kg.Solution and Answer: 19/8 kg or 2 3/8 kg of rice were left.