Posted by **bamogopa** on Friday, February 22, 2013 at 1:40pm.

9 men build a house in a working 4 days .how many workmen ,working at the same rate willbe needed to build a house in 3 days

- math -
**Steve**, Friday, February 22, 2013 at 2:54pm
9 men do the job in 4 days

That means 9 men can do 1/4 the job in 1 day.

So, each man can do 1/36 of the job in a day.

So, each man can do 3/36 = 1/12 the job in 3 days

So, it will take 12 men to do the job in 3 days

Or, more succinctly, since we want to take 3/4 as long, it will take 9/(3/4) = 12 men

- math -
**brandi**, Monday, January 27, 2014 at 9:17pm
18-10x<-22

## Answer This Question

## Related Questions

- arithmetic - Three men are working together can finish a house repair job in 10 ...
- math - 4 men built a wall in 11 days. How long would it take 1 man to build the ...
- algebra - Here's the problem: It takes Stan 20 days to build a house by himself...
- college algebra - the following rational function gives the number of days it ...
- Algebra - It takes 15 men working steadily 4 days to dig the foundation for a ...
- intermediate Algebra - Mio can build a large shed in 7 days less then yuuko can...
- ALGEBRA - Jose can paint a house in 10 days and peter can paint the same house ...
- Algebra, URGENT!!! - 1) Mio can build a large shed in 15 days less than Yuuko ...
- Math - If it takes 4 people 20 days to build a house, how long does it take 6 ...
- math - 40 MEN CAN DO A PIECE OF WORK IN 30 DAYS,WORKING 8 HOURS DAILY.IN HOW ...

More Related Questions