<PRE><B>Question 552078</B>
&lt;br&gt;&lt;font face=&quot;Tahoma&quot;&gt;In order to solve this,&lt;br&gt;

we need to find out how many man-days it takes to plough the whole field.&lt;br&gt;

It is simple to see, that if it takes 8 men 9 days to do the whole job,&lt;br&gt;

then it will take them 9*8, or 72 man-days to complete the job.&lt;br&gt;

Now, we can find out how many days it would take 18 men to do the job.&lt;br&gt;

It would still take a total of 72 man-days to do the job,&lt;br&gt;

but this time, we have 18 men instead of 8.&lt;br&gt;

Simply divide 72 by 18, and we will have our answer.&lt;br&gt;

{{{72/18=4}}}&lt;br&gt;

Thus it would take 18 men only 4 days to plough the field.&lt;br&gt;

Algebraically, we would have written it:&lt;br&gt;

{{{18x=72}}}&lt;br&gt;

This type of problem is actually MUCH simpler to do than the ones involving filling pools and buckets.&lt;br&gt;

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I hope this helps!  :)&lt;br&gt;

Email Scott: neatmath@yahoo.com for help with specific problems,&lt;br&gt;

or to inquire about mathematics tutoring via email or other methods.&lt;br&gt;

Paypal is always accepted for single problems or for more intensive tutoring!&lt;br&gt;

Single problems would range from 50 cents to 5 dollars each, depending on their complexity.&lt;br&gt;&lt;br&gt;

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