Mattress Warehouse is having a sale on all mattresses. A twin and a king-size mattress are similar rectangles, and the ratio of the corresponding sides is 2:3. If the area of the king-size mattress is 108 ft^2
what is the area of the twin mattress?
1.48 ft^2
2.72 ft^2
3.90 ft^2
4.162 ft^2