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%
Respond to this Question
Similar Questions

work
b)5 men can do equal amount of work as 8 women. If 3 men and 5 women combinely do job in 10 days, then how many woman required to finish it in 14 days? 
arithmetic
Three men are working together can finish a house repair job in 10 days. How many days will 5 men working at the same rate finish the same job? 
maths
300 men were engaged to complete a job in a certain number of days. but due to another assignment fifteen men dropped the second day, fifteen more men dropped the third days and so on .if takes fifteen more days to finish the work … 
airthmetic progression
300 men wre engaged to complete a job in acertain number of days.but due to another assignment 15 men dropped the second day,15 more dropped in the third day and so on. it takes 15 more days to finish the work now.find the no. of days … 
math
I 64 men do a job in 15 days how many more men are needed to do the job in 12 dsys? 
math
If a job takes 64 men to complete in 15 days, how many more men will take to complete the job in 12 days? 
math
20 men can do a piece of work in 24 days. After working for 6 days, additional men are employed to finish the work in 21 days from the beginning. Find the number of additional men 
Maths ( urgent help )
20 men can do a piece of work in 24 days. After working for 6 days, an additional number of men are taken to finish the work in 21 days from the beginning. Find the number of additional men . . . I tried using variation method but … 
maths
300 mens were engaged to complete a job in a certain number of days. but due to another assignment 15 men dropped the 2nd day, 15 more men dropped the 3rd day and so on.it takes 15 more days to finish the work now. find the number … 
math
If a job can be done by 10 workers in 5 hours, the work load is 10(5) = 50 manhours. If 4 workers is doing the job for 6 hours, the work done is 4(6) = 24 manhours. A remaining of 50  24 = 26 manhours of work still needs to be …