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Q.

The mass of a box measured by a grocer's balance is 2.3 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. The total mass of the box is

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a

2.30 kg

b

2.340 kg

c

2.34 kg

d

2.3 kg

answer is D.

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Detailed Solution

Total mass =(2.3+0.02015+0.02017)kg

= 2.34032 kg, upto one decimal place

= 2.3 kg

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