39 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work ?  Choose the correct choice from the following answers
A) 24  B) 77  C) 26  D) 25  E) 13
Explanation:   Less Men, means more Days {Indirect Proportion}   Let the number of days be x   then,   27 : 39 :: 18 : x   [Please pay attention, we have written 27 : 39 rather than 39 : 27, in indirect proportion, if you get it then chain rule is clear to you :)]   {\color{Blue} x=\frac{39\times 18}{27}}   x = 26   So 26 days will be required to get work done by 27 men.   Answer: 26
<result>C</result>
39 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work ?