Tipeni bought $100$ shares in a bank for $$35\mathrm{.}60$ each. He sold them two years later for $$48\mathrm{.}90$ each and paid a brokerage fee of $$32\mathrm{.}95$ for buying and selling the shares.

a What is the pro$$t made on these shares?

b What is the pro$$t as a percentage of the cost of the shares?