Multiple Choice Questions on The average age of Raj and his father is 45 years If the ages of the father and the grandfather of R........... for CAPF (AC) Exam Preparation

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Multiple Choice Questions

The average age of Raj and his father is 45 years If the ages of the father and the grandfather of R...........

Quantitative Aptitude( Paper-I ) Problems based on Ages
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    The average age of Raj and his father is 45 years. If the ages of the father and the grandfather of Raj are respectively two and three times that of Raj, then the age of Raj's grandfather is
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    CAPF 2021 Paper-1
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    75 years  

    Incorrect Answer

    90 years  

    Correct Answer

    81 years  

    Incorrect Answer

    84 years  

    Incorrect Answer
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    Explanation:

    90 years  

    • Let age of Raj is R, his father is F and his grandfather G.
    • (R + F)/2 = 45
    • R+ F= 90 …..91
    • We know that, F= 2R and G= 3R,
    • Put F in equation 1, we will get R= 30
    • Therefore G=3R= 90

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