The diagram shows a square PQRS. A second square UVWX is drawn inside it, where U divides side PQ in the ratio 1:2. Similarly, a third square is drawn inside UVWX with its side divided in the same ratio. What fraction of the area of PQRS is shaded?
Select one option, then click Submit.
25/81
16/49
4/9
40/81
2/3
Select an option, then submit.
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