Logo
    Logo

    Subject

    Bank Exam

    Topic

    Mutual Trust Bank Ltd. 2014

    If the average of a and b is 45, and the average of b and c is 35, then  (a-c)=?

    ক)
    5
    খ)
    10
    গ)
    20
    ঘ)
    30

    Explanation

    here, a+b/2=45 or,a+b=90 again, b+c/2=35 or,b+c=70 so, a+b-b-c=90-70=20

    Related questions

    A cube of side 5 cm is painted on all its side. If it is sliced into 1 cubic cm cubes, how many 1 cubic cm cubes will have exactly one of their sides painted?The length of a rope to which a cow is tied, is increased from 19m to 30m. How much additional ground will it be able to graze? Assume that the cow is able to move on all sides with equal ease.Marium has n chocolates, where n is an integer such that 20A group of 10 people plan to contribute equally to pay for a friend’s gift that costs G dollars. If n additional people want to contribute to pay for the gift, the required contribution per person will be reduced by how many dollars?In how many ways can Annie, Bushra, Camelia, Don, Elina and Farzana be seated if Annie and Bushra cannot be seated next to each other.What is the radius of the in-circle of the triangle whose sides measure 5,12 and 13 units?If -2If 0

    Find Tutors

    View all Tutors