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Ductility Question


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#1 ceglfr

ceglfr

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Posted 04 March 2012 - 11:35 PM

Had the following question on a sample exam recently.


Q: A sample of steel originally 500 mm^2 in area reduces to 385 mm^2 immediately prior to failure in a tensile test. The sample's ductility, in percentage, is most nearly:

A) 23
B 77
C) 100
D) 177









Solution does the calculation of Ductility = (Ao - Af)/A * 100 = 23% But then states the answer is D. I'm guessing it is a typo but wanted to make sure.



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