Multiple Choice Questions on If the ages of A and C are added to twice the age of B the total becomes 59 If the ages of B and C a........... for SSC CGL Exam Preparation

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Multiple Choice Questions

If the ages of A and C are added to twice the age of B the total becomes 59 If the ages of B and C a...........

Quantitative Aptitude (CGL) Problems based on Ages
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    If the ages of A and C are added to twice the age of B, the total becomes 59. If the ages of B and C are added to thrice the ageof A, the total becomes 68 and if the age of A is added to thrice the age of B and thrice and age Of C, the total becomes 108. What is the age of A?

    18 years

    Incorrect Answer

    15 years

    Incorrect Answer

    12 years

    Correct Answer

    20 years

    Incorrect Answer
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    Explanation:

    Solution: 
    A+C+2B=59–1
    B+C+3A=68–2
    A+3B+3C=108–3
    Multiply eqn 2 by 3 and subtract 3
    (3B+3C+9A=204) – (A+3B+3C=108)
    9A-A=204-108=96
    A=12 yrs.

    Let's Discuss

    Neha Choudhary

    Why did we multiply equation 2 By 3

    0 0 reply
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