Exercise :: Average  Data Sufficiency 2
 Average  Important Formulas
 Average  General Questions
 Average  Data Sufficiency 1
 Average  Data Sufficiency 2
Each of the questions given below consists of a question followed by three statements. You have to study the question and the statements and decide which of the statement(s) is/are necessary to answer the question.
1. 


Answer: Option E Explanation: I gives, total marks in 4 subjects = (60 x 4) = 240. II gives, E + M = 170 III gives, M + S = 180. Thus, none of (A), (B), (C), (D) is true. Correct answer is (E). 
2. 


Answer: Option C Explanation: Total age of 11 players = (28 x 11) years = 308 years. I. C = Y + 11 C  Y = 11 .... (i) II. Total age of 10 players (excluding captain) = (27.3 x 10) years = 273 years. Age of captain = (308  273) years = 35 years. Thus, C = 35. .... (ii) From (i) and (ii), we get Y = 24 III. Total age of 9 players = [ (25 x 3) + (28 x 3) + (30 x 3)] years = 249 years. C + Y = (308  249) = 59 .... (iii) From (i) and (iii), we get C = 35. Thus, II alone gives the answer. Also, I and III together give the answer. Correct answer is (C). 