$\"\"$

\

The total Income is $\"\"$ .

\

The invested amount is $\"\"$

\

Time period is $\"\"$ years.

\

Find annual rate of return.

\

Compound interest is $\"\"$ .

\

For annually compounded $\"\"$ .

\

Substitute all the values in the equation.

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Therefore,the rate of interest is $\"\"$ .

\

$\"\"$

\

The rate of interest is $\"\"$ .