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Saw into three sections, that is, saw twice, with an average of 12÷2=6 minutes. Then sawing into five segments means sawing four times, so it takes 4×6=24 minutes. To put it another way, sawing into five sections means sawing four times, that is, sawing twice and sawing twice, so the time it takes is 12+ 12=24 minutes. 12 is not the time to saw it into three sections and saw it twice? This is given on your condition. This has nothing to do with 6 meters.

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