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0,31 ton = 310 kg (1 ton = 1000 kg)
0,31 kW (kilowatt) is a unit of power, not mass, so it cannot be directly converted to kilograms.
1500 hg (hectogram) = 150 kg (1 hectogram = 100 grams)
So, the total in kilograms is: 310 kg (ton) + 150 kg (hg) = 460 kg
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