Loan Interest Calculation Program: Consider a software system that determines the

interest rate and calculates the interest in each loan amount.

Consider the following personal loan scheme based on the income and the credit history

of the borrower

$$ If the annual income is less than $30000$ and the credit score is less than $600,$ then

the interest rate is $7\%,$ if the credit score is greater than or equal to $600,$ then the

interest rate is $6\%$