Question 773494
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A piece of work can be done by 5 men in 10 days. After 4 days, 3 men were transferred to another job. 
how many more days will the remaining men finish the job?
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        I will show another way to solve, using different method.


        Its advantage is that the fractions or equations are not used.



<pre>
The total job is 5 men * 10 days = 50 man-days.


In the first 4 days, 5 men used 5*4 = 20 man-days;  50 - 20 = 30 man-days work remained.


Now only 5 - 3 = 2 men work.  They need 30/2 = 15 days to complete the remaining job.


So, the remaining 2 men will finish the rest of the job in 15 days.    <<<---===  <U>ANSWER</U>
</pre>

Solved completely, using mental reasoning instead equations and/or fractions.