Subject

    Bank Exam

    Topic

    Dhaka Bank Ltd. 2016 Trainee Officer (Cash)

    Two numbers A and B are such that the sum of 5% of A and 4% of B   is two-third  of  the sum of 6% of A and 8% of B. What is the ratio of A and B?

    ক)
    1:1
    খ)
    1:2
    গ)
    2:5
    ঘ)
    4:3

    Explanation

    5% of A + 4% of B=23(6% of A+8% of B). =>(5/100)×A+(4/100)×B = 2/3((6/100)×A+(8/100)×B). =>(1/20)×A+(1/25)×B=(1/25)×A+(4/75)×B. =>(12−125)×A=(475−125)×B. =>(1/100)×A=(1/75)×B. =>A/B=100/75=4/3. Hence, the required ratio = 4:3

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