Susan had a bouquet of 3 dozen roses.  She gave half to her daughter, and then placed the rest in a vase.  The next day, one-third of the flowers in the vase were wilted.  After removing the wilted flowers, how many flowers remained in the vase?
Susan had a bouquet of 3 dozen roses, which is 3*12=<T>multiply(3, 12)=36 flowers.
She gave half, 36/2=<T>divide(36, 2)=18.0 to her daughter.
Then she placed her 36-18=<T>subtract(36, 18)=18 remaining flowers in a vase.
One-third of the 18 flowers in the vase wilted, resulting in 18/3=<T>divide(18, 3)=6.0 wilted flowers.
After removing the wilted flowers, Susan had 18-6=<T>subtract(18, 6)=12 flowers remaining in the vase.
