For elementary irreversible reactions in parallel,

$A{k}_{1}R$

$A{k}_{2}S$

When $t=0s,[A]=[A{]}_0=20M.k_1=3h^{-1},k_2=10h^{-1}.$

Please derive the $A$

$R,$ and $S$ as functions of $t($time$).$ Additionally, draw the relationships between $A$

$R,$ and $S$ & $t$ on a single diagram, until $[A]=\frac{1}{10}[A{]}_0.$

The answer should include the equations and the diagram drawn with program, such as Excel, MATLAB, Origin, etc. Hand$-$drawn figures aren't acceptable.