Water flows from tank A to tank B at the rate of 2 litres per minute.

Discussion in 'Calculator Requests' started by Jahn, Sep 5, 2016.

  1. Jahn

    Jahn New Member

    Water flows from tank A to tank B at the rate of 2 litres per minute. Initially tank A has 200 litres in it and tank B has 100 Litres in it. Water drains from tank B at 0.5 litres per minute.
    After how many minutes are there equal volumes of water in the 2 tanks?

    Write an equation and solve it.
     

  2. math_celebrity

    math_celebrity Administrator Staff Member

    Tank A: V = 200 - 2x
    Tank B: V = 100 - 0.5x

    Where x is the number of minutes passed.

    Set them equal to each other
    200 - 2x = 100 - 0.5x

    Subtract 100 from each side:
    100 - 2x = -0.5x

    Add 2x to each side:
    1.5x = 100

    Divide each side of the equation by x:
    x = 66.66666667
     

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