Suppose Rs. 700 is divided among three friends X, Y, Z so that X receives half as much as Y and Y half as much as Z. Then Z's share is

Rs 300

Rs 400

Rs 500

Rs 600

Let Z = x. Then Y = x/2 and X = x/4 X:Y:Z = 1:2:4. Z's share Rs.[(4/7)*700) = 400

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