If 5 men can dig a field in 20 days, how much time it will take 4 men to dig the same field?	Choose the most appropriate option:	A) 21	B) 22	C) 23	D) 24	E) 25
25   Less the number of men, more time it will take to dig the field (inversely proportion)   5 : 4 :: N : 20   N = 20 X 5 / 4 = 25
<result>E</result>
If 5 men can dig a field in 20 days, how much time it will take 4 men to dig the same field?