On ₹ 6000, the difference between C.I. and S.I. in 2 years and at 10% compound interest, compounded per year, is :

1. ₹ 120

2. ₹ 600

3. ₹ 60

4. ₹ 180

₹ 10000 amounts to ₹ 12500 in one year. The rate of interest per year is :

1. 15%

2. 12.5%

3. 20%

4. 25%

Simple interest, at the same rate for the same period as given above in part (c) is :

1. ₹ 7040

2. ₹ 6400

3. ₹ 3200

4. ₹ 1280

The difference between C.I. and S.I. in 2 years as given above for parts (c) and (d) is :

1. ₹ 640

2. ₹ 3840

3. ₹ 1920

4. ₹ 1280