Cook the eggs for up to 12 minutes. Set your microwave on medium power and begin microwaving the eggs. The eggs may take anywhere from six to 12 minutes to become hard boiled, depending on your microwave. The eggs may be ready sooner if your microwave is high-powered or if you prefer your eggs softer.
Perkins Loans carry a fixed interest rate of 5% for the duration of the ten-year repayment period. The Perkins Loan Program has a nine-month grace period, so that borrowers begin repayment in the tenth month upon graduating, falling below half-time status, or withdrawing from their college or university.
How to Calculate APR. Assuming the principal amount is $100 at the beginning of a period, the quoted interest rate is 10 percent, and that interest is compounded semiannually, or twice a year. How to calculate APR thus involves the following computations.Covert the annual interest rate of 10 percent to a semiannual rate of five percent (10 percent/2 = 5 percent). Multiply the $100 principal by the periodic semiannual rate of 5%, and get $5 in interest.or example, how to calculate APR semiannually for the quoted interest rate of 10 percent requires the conversion of the annual rate to a periodic semiannual interest rate of five percent.