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# Python Program for Simple Interest

Simple interest formula is given by: Simple Interest = (P x T x R)/100 Where, P is the principal amount T is the time and R is the rate

Examples:

`Input : P = 10000        R = 5        T = 5Output :2500.0We need to find simple interest on Rs. 10,000 at the rate of 5% for 5 units of time.`

## Python3

 `# Python3 program to find simple interest``# for given principal amount, time and``# rate of interest.`  `def` `simple_interest(p,t,r):``    ``print``(``'The principal is'``, p)``    ``print``(``'The time period is'``, t)``    ``print``(``'The rate of interest is'``,r)``    ` `    ``si ``=` `(p ``*` `t ``*` `r)``/``100``    ` `    ``print``(``'The Simple Interest is'``, si)``    ``return` `si``    ` `# Driver code``simple_interest(``8``, ``6``, ``8``)`

Output

```The principal is 8
The time period is 6
The rate of interest is 8
The Simple Interest is 3.84

```

Time complexity: O(1)
Auxiliary Space: O(1)

### Program for simple interest with Taking input from user

We can calculate the simple interest by taking P,T and R from the user.

## Python3

 `# Python3 program to find simple interest``#  principal amount, time and``# rate of interest taken from user.`  `def` `simple_interest(p,t,r):``    ``print``(``'The principal is'``, p)``    ``print``(``'The time period is'``, t)``    ``print``(``'The rate of interest is'``,r)``    ` `    ``si ``=` `(p ``*` `t ``*` `r)``/``100``    ` `    ``print``(``'The Simple Interest is'``, si)``    ` `    ` `# Driver code``P ``=` `int``(``input``(``"Enter the principal amount :"``))``T ``=` `int``(``input``(``"Enter the time period :"``))``R ``=` `int``(``input``(``"Enter the rate of interest :"``))``simple_interest(P,T,R)`

Output:

`Input:Enter the principal amount :3000Enter the time period :7Enter the rate of interest :1Output: The simple interest is 210.0`

Time complexity: O(1)
Auxiliary Space: O(1)

#Please refer complete article on Program to find simple interest for more details!