Rachel is twice as old as Rona and Collete's age is half the age of Rona's. If Rona is 8 years old, what is the difference between the age of Collete and Rachel?
Rachel's age is 8 x 2 = <T>multiply(8, 2)=16
Collete's age is 8 / 2 = <T>divide(8, 2)=4.0
Therefore the difference between their age is 16 - 4 = <T>subtract(16, 4)=12
