** Example 1**:

Find simple interest on Rs. 3000 at 7% rate of interest for one year.

**:**

__Solution__Let Principal = 3000, Rate of interest = 7%,

Simple interest

__Example 2__**:**

Find simple interest on Rs. 10,000 at the rate of 5% for 5 years. Also find the amount for 5 years.

__Solution__**:**

Let Principal = 10,000 Rs., Rate = 5%, Time

Amount of simple interest for 5 years is

Hence the amount after 5 years

__Example 3__**:**

Find simple interest on Rs. 156,00 for years at the rate of 5% per annum. Also find total amount.

__Solution__**:**

Let Principal = 15,600, Rate = 5% , Time = years

Simple interest for 5 years

Amount

__Example 4__**:**

Find simple interest on Rs. 8,000 for 40 days, at 10% per annum.

__Solution__**:**

Let Principal = 8,000 Rs., Rate = 10% per annum, Time = 40 days

Simple interest