Question 1185315
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You have two responses showing different ways to solve the problem.<br>
Here is a third method.<br>
They are all good methods.  Try each one and find the one that "works" for you and use it on future similar problems.<br>
Better yet, understand all three methods; depending on how a particular problem is presented, any one of the three methods might be easier to use.<br>
The third method for this problem...<br>
The number of days is increased by a factor of 14/10 = 7/5.  7/5 as many days means 5/7 as many men will be needed.<br>
ANSWER: 7*(5/7) = 5 men will be needed<br>