Find the interest rates earned on each of the following. Round your answers to the nearest whole number.

You borrow $720 and promise to pay back $792 at the end of 1 year.

%

You lend $720, and the borrower promises to pay you $792 at the end of 1 year.

%

You borrow $73,000 and promise to pay back $144,536 at the end of 14 years.

%

You borrow $20,000 and promise to make payments of $6,687.60 at the end of each year for 5 years.

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