The rates of simple interest in two banks $\text{A}$ and $\text{B}$ are in the ratio $5: 4$. A person wants to deposit his total savings in two banks in such a way that he receives equal half yearly interest from both. He should deposit the savings in banks $\text{A}$ and $\text{B}$ in the ratio :
- $2: 5$
- $4: 5$
- $5: 2$
- $5: 4$