math
posted by vincent .
if 8 men can do a job in days, what is the percentage increase in number of days required to do the job when 2 men are released?
not just an answer please.
A.16 2/3%
B.25%
C. 33 1/3%
D.40%
E.48%

6 men is 3/4 of 8 men
So, they can only do 3/4 as much work in a day.
So, it takes 4/3 as many days, or
(C) 
suppose it took n days
number of mandays = 8n
if done by 6 men
number of days = 8n/6 = 4n/3
change in days = 4n/3  n = (1/3)n
percentage change = (1/3)n / n = 1/3 or 33 1/3%