SSC CGL Tier 1 :: Quantitative Aptitude QA Test 1

    Quantitative Aptitude » QA Test 1 » General Questions - Discussion
    [ A ]    26
    [ B ]    20 right
    [ C ]    29
    [ D ]    23
    1 .

    The average age of A, B and C is 26 years. If the average age of A and C is 29 years, what is the age of B in years ?
    Answer : Option B
    Explanation :
    Age of B = Age of (A + B + C) – Age of (A + C) = 26 × 3 – 29 × 2 = 78 – 58 = 20 years
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