Question 1099541
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<pre>
From the first part of the condition, the rate of work of one worker per day is {{{100/(15*14)}}}.


Next step is to find how many men is required to plough 250 acres in 21 day.


For it, divide {{{250/21}}} by the rate of work of one worker per day:

{{{250/21}}} : {{{100/(15*14)}}} = {{{((250/21))/((100/(15*14)))}}} =
 
{{{(250*15*14)/(100*21)}}} = {{{(5*15*14)/(2*21)}}} = {{{(5*15*2)/(2*3)}}} = 5*5 = 25.


Now the answer to the problem's question is:  25 - 15 = 10 more men will be required.


<U>Answer</U>.  10 more men will be required.
</pre>

For similar solved problems see the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Rate-of-work-word-problems/Rate-of-work-problem.lesson>Rate of work problems</A> 

in this site.