What fraction of the square region in the figure above is shaded?
(1) The area of the square region is 36. We don't know positions of P and Q. Not sufficient.
(2) P and Q are midpoints of two sides of the square as shown. Look at the diagrambelow:
Attachment:
Square 2.png [ 17.09 KiB | Viewed 54 times ]
Answer: B.
Hope it's clear.
...