Having The Lack Of Information, We Can Only Give You An Equation.
So:
Quotient = Division.
R / 12 Is The Equation.
(If This Is Not What You Need, Put In More Info, And I Can Solve It. ;) <span />
Answer:
a=20
Step-by-step explanation:
You cross multiply: 9a=180
a=20.
There isn't a picture so I can't see the model to help you.
