E is the midpoint of diagonal BD of a parallelogram ABCD. If the point E is joined to a point F on DA such that DF=13DA, if the ratio of the area of ΔDEF to the area of quadrilateral ABEF is 1:K then find K ?
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Solution
ABCD is a parallelogram.E is the midpoint of BD.E is joined to F,where FD=13DA