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Mathematics 9 Online
OpenStudy (anonymous):

I cut a board into 7 pieces in 4 hours 40 minutes. How long would it take me to cut an identical board into 28 pieces assuming I cut at the same speed?

OpenStudy (dan815):

4 times longer? unless your cuts arent the same length |dw:1371079521343:dw| if ur cuts are like this >_> then 4 times longer

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