i already try for question no Q1 as below, but the answer is not same from text book. so i hope some body can help me here.

Q1. A man deposits RM 500 in a bank. The interest receive of 5% per year is kept in bank. Find

(a) the number of years it will take for the total savings to exceed RM750.

(the ans: 9 but my ans 11)

(b) the total saving after 8 years.

Q2. On 1 st January each year, a man puts RM 50 in a bank whick give 4% interest each year. What is the value of his saving on 31 st December of the tenth year?

Tq for your time