A trader needs $300000 to improve her business, she deposits $110000 in her savings

A trader needs $300000 to improve her business, she deposits $110000 in her savings account at 5% per annum compound interest. she then adds $50000 to her savings at the end of each year find (a) her total savings after 3 years.
(b)by how much is her savings greater or less than $300000 at the end of the third year​