1. At what annual interest rate capitalizable each semester equals six semi-annual advance deposits of $ 16670 at a present value of $ 70000. What is the effective rate?

2.To pay for an article with a cash value of $ 132800, we were asked for 25 bi-monthly payments of $ 8,148 each. If the first payment is immediately, obtain the capitalizable annual interest rate every two months and the effective rate.