The account b1 contains $0.00.
The account b2 contains $0.00.

The account b1 contains $10.00.
The account b2 contains $20.00.

---BEGIN ARRAY WORK---

The account arr1 contains $0.00.
Despositing $100.
The account arr1 now contains $100.00.
Calculating interest at 10%.
The account arr1 now contains $110.00.

The account arr2 contains $0.00.
Despositing $200.
The account arr2 now contains $200.00.
Calculating interest at 20%.
The account arr2 now contains $240.00.

The account arr3 contains $25.00.
Despositing $300.
The account arr3 now contains $325.00.
Calculating interest at 30%.
The account arr3 now contains $422.50.

The account arr4 contains $50.00.
Despositing $400.
The account arr4 now contains $450.00.
Calculating interest at 40%.
The account arr4 now contains $630.00.

The account arr1 contains $110.00.
The account arr2 contains $240.00.
The account arr3 contains $422.50.
The account arr4 contains $630.00.