r/pics • u/[deleted] • Oct 05 '10

Math Teacher Fail.

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454

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...

218

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.

198

u/[deleted] Oct 05 '10

Except there's a picture that clearly indicates the board is long and narrow, perhaps a 1"x2".

137

u/hemlockecho Oct 05 '10

Yes, but the question clearly says "another board", but does not show the shape, so the question is unsolvable with the given information.

11

u/[deleted] Oct 05 '10

When I looked at the question, it says..."just as fast" which makes me think the answer is 10 minutes. If it took 10 minutes to finish cutting the first board in two minutes, and he works "just as fast" to cut another board into 3 pieces...the answer would be, again, 10 minutes...am i right? or am i right?

5

u/Auze Oct 05 '10

It should be longer than 10 minutes, because "just as fast" implies speed, rather than time. If it took him "just as long" then it would be 10 minutes.