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Mathematics, 12.08.2021 14:00 smithmorgan773p35885

Three different items are weighed in pairs. For example, item A is weighed with item B. These pairs of items are weighed as 11kg, 12kg and 13kg. What is the weight of all three times together? a) 15kg b) 18kg c) 21kg d)24kg e)28kg

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