11 men can dig 
-metre-long trench in one day. How many men should be employed for digging 27-metre-long trench of the same type in one day?
More the length of the trench, more will be the no. of men required to finish it in a day. So it is a direct proportion.
6
m = 
m
Let the no. of men be x, 
⇒ 
× x = 27 × 11
⇒ x = 
= 44 men
14