Fund A is invested at an annual effective interest rate of 3%.

Fund B is invested at an annual effective interest rate of 2.5%.

At the end of 20 years, the total in the two funds is 10,000. At the end of 31 years, the amount in Fund A is twice the amount in Fund B.

Calculate the total in the two funds at the end of 10 years.

1. 5,73

2. 6,602

3. 7,472

4. 7,569

5. 8,123