There is a sufficient food for 200 men for 20 days after 15 days 100 men leave the place. For how many days will the rest of the food last for the rest of the men?  Choose the correct choice from the following choices.
A) 10 days	B) 5 days	C) 15 days	D) 12 days	E) 10 days

Rationale: explanation : after 13 days , 100 men left , therefore 5 days * 200 men = x days * 100 men x = 10 days answer : option a
Answer: A