SOLUTION: a masons can build a 12 meters long wall in 4 days. find how many masons are required to build the 27 meters long wall in 3 days?

Algebra ->  Proportions -> SOLUTION: a masons can build a 12 meters long wall in 4 days. find how many masons are required to build the 27 meters long wall in 3 days?      Log On


   

Question 502322: a masons can build a 12 meters long wall in 4 days. find how many masons are required to build the 27 meters long wall in 3 days?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
a masons can build a 12 meters long wall in 4 days.
:
The number of man-days per meter requires: %284a%29%2F12 = a%2F3 man-days per meter
:
:
find how many masons are required to build the 27 meters long wall in 3 days?
:
A 27 meter wall requires
27 * a%2F3 = %2827a%29%2F3 = 9a man-days
m = no. of masons required
3m = 9a
Divide by3
m = 3a
3a masons required to accomplish this