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The true answer to this is a system of solutions because there is ambiguity introduced with the terms "5 machines" it does not explicitly state that these are "identical" machines with the same production rate so there is techinically an infinite number of solutions.
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Lets disambiguate:
uniform machines- problem makes sense, has one clear answer
the 100 machines are different types of machines- makes the correct answer: it is impossible to know from this information
The implication is that the machines are identical or at least average out to some production rate. Technically the words on the paper don't mean this, but it is implied by the context and the fact that the 5 machines would be irrelevant if they did not relate in some important way to the 100 machines.
http://www.sil.org/linguistics/Gloss...Implicatur.htm