1. Find the interest on Rs 10,000 for 5 years at the rate of 11 p.c.p.a.

2. Find the interest on Rs 3,500 for 2 years at the rate of 7 p.c.p.a.

3. Find the interest on Rs 1,200 for 4 years at the rate of 9 p.c.p.a.

4. Find the interest on Rs 11,000 for 2 years at the rate of 10 p.c.p.a.

5. Find the interest on Rs 900 for 3 years at the rate of 12 p.c.p.a.

6. If period = 8 years, rate = 9%, simple interest Rs 8,640, what is the principal?

7. If principal = Rs 9,000 rate = 5%, simple interest Rs 2,475, what is the period?

8. If principal = Rs 11,000 period = 6 years, simple interest = Rs 2,640, what is the rate?

9. Find the interest on Rs 8,000 for 5 years at the rate of 7 p.c.p.a.