The Bawl Street Journal costs $206, payable now, for a 2-year subscription. The newspaper is published 252

Question:

The Bawl Street Journal costs $206, payable now, for a 2-year subscription. The newspaper is published 252 days per year (5 days per week, except holidays). If a 10% nominal annual interest rate, compounded quarterly is used:
(a) What is the effective annual interest rate in this problem?
(b) Compute the equivalent interest rate per 1/252of a year.
(c) What is a subscriber's cost per copy of the news- paper, taking interest into account?