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The mass of a box measured by a grocer’s balance is 2.30 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is (a) the total mass of the box, (b) the difference in the masses of the pieces to correct significant figures?
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kanikab90

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rishitgoyal1992

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According to the question, mass of the box is 2.30 kg and the mass of the first gold piece is 20.15 g. Also, the mass of the second gold piece is 20.17 g. Since the least number of decimal places is 1, the total mass = 2.7 kg.

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