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?
:
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 = {{{180/9}}}
m = 20 men