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    Subject

    Quantitative Aptitude

    Topic

    Ratio

    Ratio of weight of A and B is 7/2 If the weight of A were 2 kg less, the ratio would have been 7/6. What is the present weight of ‘A’?

    ক)
    3
    খ)
    2
    গ)
    5
    ঘ)
    1
    ঙ)
    7

    Explanation

    From question, ⇒AB=72\Rightarrow {A \over B} = {7 \over 2}  ____________(1) ⇒A−2B=76\Rightarrow {{A - 2} \over B} = {7 \over 6} 6A – 12 = 7B                                     ____________(2) Substitute from (1) ⇒6A−12=7×2A7\Rightarrow 6A-12 = 7 \times {{2A} \over 7} ⇒ (6-2) A = 12 ⇒ 4A = 12 ⇒ A = 3

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