[tex]\huge\boxed{{\tt{\color{violet}{Answer}}}}[/tex]
Rate of commission (rate) - [tex]\large\color{lime}{{\tt{20}}}[/tex]%
[tex]\\[/tex]
C = [tex]\frac{AC}{SP}[/tex]
= [tex]\frac{900}{4,500}[/tex]
= 0.2 × 100
= 20%
[tex]\large\boxed{{\tt{\color{violet}{CarryOnLearning}}}}[/tex]
