Answer: C. [tex]10000n\dfrac{x}{100}[/tex]
Step-by-step explanation:
Given : The principal amount : P=$10,000
Rate of interest (in percent ) : x
Time period : n years
The formula to calculate the simple interest is given by :-
[tex]S.I.=\dfrac{P\times R\times T}{100}[/tex]
[tex]\Rightarrow\ S.I.=\dfrac{10000\times x\times n}{100}[/tex]
it can also be written as [tex]\Rightarrow\ S.I.=10000n\dfrac{x}{100}[/tex]
Hence, C is the right option.