data sufficiency - there are five sheeps in a house each of them with same weight what is the total weight of those 5 sheeps i half of a sheep weighs 20kg ii sum of the weight of 3 sheeps is equal to 40kg more than sum of 2 sheeps weight - skillgun

Please read the below given text for solving the question Each question given below has a problem and two statements numbered I and II giving certain information. You have to decide if the information given in the statements is sufficient for answering the problem. Indicate your answer as (a) if the data in the statement I alone is sufficient to answer the question; (b) if the data in the statement II alone is sufficient to answer the question; (c) if the data either in I or II alone are sufficient to answer to question; (d) if the data even in both the statements together are not sufficient to answer the question; (e) if the data in both the statement together are needed.

From I, we find that the weight of one sheep is 40kg and so the weight of 5 sheeps is 200 kg.
Thus I alone is sufficient.
From II we have weight of one sheep is 40kg, so weight of 5 sheeps is 200 kg.
Thus II alone is also sufficient.