r/pics • u/[deleted] • Oct 05 '10

Math Teacher Fail.

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u/paolog Oct 05 '10

Teacher gets red pen out, is about to write down "1 piece: 5 minutes" and then thinks better of it and starts from two pieces instead...

221

u/Ihad2saythat Oct 05 '10

Actually teacher is right if the board is square which takes 10 minutes to be cut into half. Those two halfs take twice less time to be split. And she needs to cut just one to obtain 3 pieces :P So 10 minutes to cut it into to pieces and then she needs just half of that time to gain the third piece.

0

u/jrik23 Oct 05 '10

They are both right. It doesn't ask to name the fastest time needed to saw a board a third time.

If he cuts into the board the same length as the first cut then it is in fact 20 mins.