<PRE><B>Question 502322</B>
 a masons can build a 12 meters long wall in 4 days.
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The number of man-days per meter requires: {{{(4a)/12}}} = {{{a/3}}} man-days per meter
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find how many masons are required to build the 27 meters long wall in 3 days?
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A 27 meter wall requires
27 * {{{a/3}}} = {{{(27a)/3}}} = 9a man-days
m = no. of masons required
3m = 9a
Divide by3
m = 3a
3a masons required to accomplish this

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