There are five boxes in a cargo. the weight of the first box is 200 kg and the weight of the second box is 20 % higher than the weight of the third box, whose weight is 25% higher than the weight of the first box. the fourth box which weighs 350 kg is 30% lighter than the fifth box. find the difference in the average weight of the four heaviest boxes and four lightest boxes.
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I can't answer sorry...!!
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