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A total of 25 boxes are stacked one above the other and the total weight of the boxes is 225 kg. What will the average weight of the boxes be if 8 more boxes are stacked given that the weight of all the boxes are equal?

A total of 25 boxes are stacked one above the other and the total weight of the boxes is 225 kg. What will the average weight of the boxes be if 8 more boxes are stacked given that the weight of all the boxes are equal? Correct Answer 9

Total 25 boxes are stacked one above another and weight of each box be x

∴ According to question

25x = 225 

⇒ x = 9 

∴ The weight of each box is 9kg

Now, 8 more boxes are stacked 

⇒ Total weight of the boxes 225 + (9 × 8) = 297 kg

∴ Average weight of total boxes = 297/33 = 9 kg

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