Question
The total mass of 2 boxes is 7 kg 648 g. One of the boxes weighs 128 g more than the other. What is the mass of the lighter box? (Give the answer in kilograms and grams.)
2 m

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The total mass of 2 boxes is 7 kg 648 g. One of the boxes weighs 128 g more than the other. What is the mass of the lighter box? (Give the answer in kilograms and grams.)