Subject

    Bank Exam

    Topic

    First Security Islami Bank (Officer)-2014

    Tariq drives from city A to B at 40 km per hour and returns over the same road at 30 km per hour and spends 8 hours away from fome including a one-hour stop for lunch.What is the distance(in km) between city A and city B?

    ক)
    100
    খ)
    120
    গ)
    180
    ঘ)
    none of these

    Explanation

    suppose, distance  from  A to B = x k.m according to question, x/40+x/30+1=8 or,3x+4x/120=8-1 or,7x=7 X120 or,x=120 so ,distance=120 km

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