A bank that provides overdraft protection charges $11$ percent for each $$100($or portion of $$100)$ borrowed when an overdraft occurs.

a$.$ What amount of interest would the customer pay for a $$300$ overdraft? $($Assume the interest is for the full amount borrowed for a

whole year.$)$

b$.$ How much would be saved by using the overdraft protection loan if a customer has three overdraft charges of $$30$ each during the

year?

Answer is complete but not entirely correct.