Answer: 28 kilograms and 77 grams
Explanation:
3902 grams is equal to 3 kilograms and 902 grams. 902 grams plus 175 grams equals 1077 grams, which equals 1 kilogram and 77 grams. 24 kilograms plus 3 kilograms equals 27 kilograms. 27 kilograms plus 1 kilogram and 77 grams equals 28 kilograms and 77 grams.