The uniform seesaw shown below is balanced on a fulcrum located 3.0 m from the left end. The smaller boy on the right has a mass of 42 kg and the bigger boy on the left has a mass of 83 kg. What is the mass of the board (in kg)?
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The uniform seesaw shown below is balanced on a fulcrum located 3.0 m from the left end. The smaller boy on the right has a mass of 42 kg and the bigger boy on the left has a mass of 83 kg. What is the mass of the board (in kg)?
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