Alex put £350 into a building society savings account, which pays 6% simple interest each year. he didn't pay in or take out any other money, and after three years he went to check how much interest he had been paid.
(a) calculate the amount of interest he should have been paid each year;
(b) determine how much money he had in the account at the end of the 3 years
can someone explain this to i really don't get percentages.