|
Title: If 12 men can do 36 computers in 7 hours.How many men will it take to make 36 computers in 14 hours Post by: Erson on Jan 26, 2019 I need to answer this.We're having a contest tomorrow and I can't still find the answer.Please teach me the method.
Title: Re: If 12 men can do 36 computers in 7 hours.How many men will it take to make 36 computers in 14 ho Post by: bio_man on Jan 26, 2019 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: \(\frac{12\cdot \left(\frac{36}{14}\right)}{\left(\frac{36}{7}\right)}=x=6\) |