Question
In the figure, the ratio of the area of Circle X to Circle Y to Circle Z is 3 : 6 : 9. If 13 of X is shaded, what is the ratio of the shaded part to the unshaded part to the total figure?
2 m

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In the figure, the ratio of the area of Circle X to Circle Y to Circle Z is 3 : 6 : 9. If 13 of X is shaded, what is the ratio of the shaded part to the unshaded part to the total figure?