Maggie invests $1,000 in a CD at 10% a year for five years. She withdraws the interest at the end of each year. 

What amount doesshe have at the end of five years assuming that she does not spend or invest the interest?
(b) Maggie invests $1,000 in a CD at 10% a year for five years, but when the interest is credited at the end of each year, she leaves it in her account. 

What amount does she have at the end of five years?