If 36 men can do a piece of work in 25 hours, in how mwny hours will15 men do it?  Choose the correct choice from the following answers:
A) 22  B) 38  C) 60  D) 88  E) 72
Explanation:   Let the required no of hours be x. Then   Less men , More hours (Indirct Proportion)   \inline \fn_jvn \therefore 15:36 ::25:x \inline \fn_jvn \Leftrightarrow (15 x X)=(36 x 25) \inline \fn_jvn \Leftrightarrow \inline \fn_jvn x=\frac{36\times 25}{15}=60   Hence, 15 men can do it in 60 hours.   Answer: 60) 60
<result>C</result>
If 36 men can do a piece of work in 25 hours, in how mwny hours will15 men do it?