62. mary has 2000 dollars half is saved in a simple interest rate, and the other half is saved in semi-annual compound interest rate of 8%. at the end of the year the interest earned from these savings accounts equal to each other. what is the simple interest rate.

1. 8.16

2. 8.23

3. 8.25

4. 8.45

怎么算阿

that means the simple annual rate is equal to the anuual rate of 8% compound semi-annually: (1+8%/2)^2-1=8.16%