Rita deposits $800 into an account that pays Simple interest at a rate of 3% per year. How much interest will she be paid in the first 3 years?

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50