Respuesta :
first you turn the grams into kilo grams and since there are 1000 grams in a kilogram 3900 turns to 3.9 so 3.9+5.4= 9.3kg
Convert the 5.4 KG to 5,400 g. Then add her dad's amount of fish with Felice's. 5,400 + 3,900 = 9,300 g. Convert it back, it will be 9.3 kg. Solved!