A person decided to build a house in 100days. He employed 100men in the beginning and 100 more after 50 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 choices.
A) 40 B) 80 C) 50 D) 60 E) 50
200 men do the rest of the work in   100-50= 
<gadget id="calculator">  100-50</gadget>
<output>50</output>
50days   100 men can do the rest of the work in 50*200/100= 
<gadget id="calculator">50*200/100</gadget>
<output>100</output>
100days   Required number of days= 100-50= 
<gadget id="calculator">100-50</gadget>
<output>50</output>
50 days   Answer is 50
<result>C</result>
A person decided to build a house in 100days. He employed 100men in the beginning and 100 more after 50 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?