QBASIC program to solve the following problems. Type them in the QBASIC IDE, write them and save them in D: drive. Write a program that asks the principal amount, rate and time then calculates and displays simple interest.

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To create a QBASIC program that calculates simple interest based on user input for the principal amount, rate, and time, you can follow these steps:

1. **Open QBASIC IDE**: Start the QBASIC IDE on your computer.

2. **Write the Program**: Below is the code for the program that calculates simple interest.

```qbasic
' Simple Interest Calculator in QBASIC

' Declare variables
DIM principal AS SINGLE
DIM rate AS SINGLE
DIM time AS SINGLE
DIM simpleInterest AS SINGLE

' Ask for user input
PRINT "Enter the Principal Amount: "
INPUT principal
PRINT "Enter the Rate of Interest (in %): "
INPUT rate
PRINT "Enter the Time (in years): "
INPUT time

' Calculate Simple Interest
simpleInterest = (principal * rate * time) / 100

' Display the result
PRINT "The Simple Interest is: "; simpleInterest

' Wait for user to press a key before ending
PRINT "Press any key to exit..."
SLEEP
```

3. **Save the Program**: After typing the code, save the program by following these steps:
   - Go to the menu and select `File`.
   - Choose `Save As`.
   - Navigate to the `D:` drive.
   - Enter a filename, for example, `SimpleInterest.bas`, and press `Enter`.

4. **Run the Program**: You can run the program by selecting `Run` from the menu and then `Start` or by pressing `F5`.

### Explanation of the Code:
- The program starts by declaring variables to hold the principal amount, rate of interest, time, and the calculated simple interest.
- It prompts the user to input the principal amount, rate of interest, and time in years.
- The simple interest is calculated using the formula: 
  $$
  \text{Simple Interest} = \frac{\text{Principal} \times \text{Rate} \times \text{Time}}{100}
  $$
- Finally, it displays the calculated simple interest and waits for the user to press a key before exiting.

Make sure to follow these steps in the QBASIC IDE to successfully create and save your program.
Here's a QBASIC program that calculates simple interest based on user input for principal amount, rate, and time. Save it as `SimpleInterest.bas` on the D: drive. ```qbasic ' Simple Interest Calculator in QBASIC ' Declare variables DIM principal AS SINGLE DIM rate AS SINGLE DIM time AS SINGLE DIM simpleInterest AS SINGLE ' Ask for user input PRINT "Enter the Principal Amount: " INPUT principal PRINT "Enter the Rate of Interest (in %): " INPUT rate PRINT "Enter the Time (in years): " INPUT time ' Calculate Simple Interest simpleInterest = (principal * rate * time) / 100 ' Display the result PRINT "The Simple Interest is: "; simpleInterest ' Wait for user to press a key before ending PRINT "Press any key to exit..." SLEEP ``` Save the code and run it in the QBASIC IDE to calculate simple interest.

QBASIC program to solve the following problems. Type them in the QBASIC IDE, write them and save them in D: drive. Write a program that asks the principal amount, rate and time then calculates and displays simple interest.

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