Fail Comments
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to make three pieces you cut twice the same board and if it took 10 minutes one cut then is 20 minutes the answer is right and the teacher should go back to study basic math...
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ahhhhh, but this other board was a different board, it was wider, longer and thicker and made of a harder wood and she used a different saw too.
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Diagram is not a board.
to make three pieces you cut twice the same board and if it took 10 minutes one cut then is 20 minutes the answer is right and the teacher should go back to study basic math...