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 = 
<gadget id="calculator">8*2</gadget>
<output>16</output>
16.
Collete's age is 8 / 2 = 
<gadget id="calculator">8/2</gadget>
<output>4</output>
4.
Therefore the difference between their age is 16 - 4 = 
<gadget id="calculator">16-4</gadget>
<output>12</output>
12.

<result>12</result>