The interest for the first year is 2000×0. 15=300.

The interest for the second year is 2000× 0.15×1.5 = 450.

The interest for the third year is 2000× 0.15×1.5 = 450.

Total interest: 1200

Total principal and interest: 3,200.

Note: The penalty interest rate of rural credit cooperatives in loans overdue is 150%, and the penalty interest rate for misappropriation is 200%.