Friendly's Quick Loans, Incorporated, offers you $$6\mathrm{.}50$ today but you must repay $$8\mathrm{.}78$ when you get your paycheck in one week $($or

else$).$

a$.$ What is the effective annual return Friendly's earns on this lending business?

Note: Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$

b$.$ If you were brave enough to ask, what APR would Friendly's say you were paying?

Note:Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$