New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    In each of the following questions, a question is followed by two or three statement. Read all the statements and find that which statements are required to answer the question and answer accordingly.

    What is the age of C, in a group of A, B, C, D and E

    whose average age is 50 years? I: Average of the age of D and E is 47 years? II: Average of the age of A and B is 50 years?
    A Only II Correct Answer Incorrect Answer
    B Only I Correct Answer Incorrect Answer
    C Both I and II Correct Answer Incorrect Answer
    D Neither I nor II Correct Answer Incorrect Answer

    Solution

    From statement I and II: A + B + C + D + E = 5 × 50 = 250 years ……………….(i) A + B = 100 years …………………(ii) D + E = 94 years ………………..(iii) From (i), (ii) and (iii), we get C = 56

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