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Home Q & A Board Science-Related Homework Help Mathematics Algebra (Moderator: bio_man)
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Erson Erson
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5 years ago
I need to answer this.We're having a contest tomorrow and I can't still find the answer.Please teach me the method.
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5 years ago Edited: 5 years ago, bio_man
If 12 men can do 36 computers in 7 hours.How many men will it take to make 36 computers in 14 hours

\(12\ :\ \left(\frac{36}{7}\right)=x\ :\ \left(\frac{36}{14}\right)\)

\(\frac{12}{\left(\frac{36}{7}\right)}=\frac{x}{\left(\frac{36}{14}\right)}\)

Cross-multiply:

\(\frac{12\cdot \left(\frac{36}{14}\right)}{\left(\frac{36}{7}\right)}=x=6\)
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