1 triangle + square + circle = 23 kg, 2 square + 2 circle = 22 kg, 2 triangle + 1 circle = 28 kg. What is the weight of triangle, circle and square?

Triangle + square + circle = 23 kg
Because, 2 squares + 2 circles = 22 kg
So, square + circle = 11 kg
Then triangle = 12 kg
Because, 2 triangle + circle = 28 kg
So, circle = 4 kg
So cube = 7 kg

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