\"\"

\

Simple interest \"\".

\

\"\"          (Substitute \"\")

\

\"\"                       (Multiply: \"\")

\

\"\"                                (Multiply: \"\")

\

\"\"

\

Amount \"\".

\

\"\"              (Substitute \"\")

\

\"\"                       (Add: \"\")\"\"

\

Simple interest is $500.

\

Amount is $1750.