SOLUTION: It takes 15 workers to build 500 ft. of fencing in 6 hours. At this same rate, how many workers are needed to build 1000 ft. of fencing in 9 hours?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: It takes 15 workers to build 500 ft. of fencing in 6 hours. At this same rate, how many workers are needed to build 1000 ft. of fencing in 9 hours?       Log On


   

Question 242971: It takes 15 workers to build 500 ft. of fencing in 6 hours. At this same rate, how
many workers are needed to build 1000 ft. of fencing in 9 hours?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
It takes 15 workers to build 500 ft. of fencing in 6 hours.
At this same rate, how many workers are needed to build 1000 ft. of fencing in 9 hours?
:
Use man-hrs here:
It takes 15*6 = 90 man-hrs to build 500 ft of fence
therefore, it will take 180 man-hrs to build 1000 ft of fence
:
Let m = no. of men required
:
9m = 180
m = 180%2F9
m = 20 men