Problem:
Two congruent squares, and , have side length . They overlap to form the by rectangle shown. What percent of the area of rectangle is shaded?
Answer Choices:
A.
B.
C.
D.
E.
Solution:
The shaded rectangle has height and length .
Rectangle has the same height and length . The portion of rectangle that is shaded is , which is .
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions