Mathematics, 13.11.2020 17:00, jennifer2129

The total weight of a box, 20 plates and 30 cups is 4.8 kg. The total weight of the box, 40 plates and 50 cups is 8.4 kg. What is the total weight of the box, 10 plates and 20 cups?

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The total weight of a box, 20 plates and 30 cups is 4.8 kg. The total weight of the box, 40 plates a...