A builder decided to build a farm house in 40days. He employed 100men in the beginning and 100 more after 35 days and completed the construction in stipulated time. If he had not employed the additional men , how many days behind schedule would it have been finished?  Choose the correct choice from the following answers
A) 5  B) 7  C) 10  D) 15  E) 12
200 men do the rest of the work in   40-35= 
<gadget id="calculator">  40-35</gadget>
<output>5</output>
5days   100 men can do the rest of the work in 5*200/100= 
<gadget id="calculator">5*200/100</gadget>
<output>10</output>
10days   Required number of days= 10-5= 
<gadget id="calculator">10-5</gadget>
<output>5</output>
5 days   5nswer is 5
<result>A</result>
A builder decided to build a farm house in 40days. He employed 100men in the beginning and 100 more after 35 days and completed the construction in stipulated time. If he had not employed the additional men , how many days behind schedule would it have been finished?