💡 Electricity Bill Calculator

👨‍🏫 Objective

Write a Java program using if, if-else, and if-else-if statements to calculate the electricity bill based on the number of units consumed.

💻 Task

Edit ElectricityBillCalculator.java to:

1. Accept user input for units consumed.
2. Apply tiered rates based on the unit slabs.
3. Output the total bill amount.

⚙️ Input

• A single integer representing total units consumed.

📤 Output

• The electricity bill in rupees with one decimal place.

💡 Billing Rates

• Up to 100 units: ₹1.5/unit
• 101–300 units: ₹2.5/unit for units above 100
• 301–500 units: ₹4/unit for units above 300
• Above 500 units: ₹6/unit for units above 500

🧪 Sample I/O

Example 1

Enter total units consumed: 80  
Electricity Bill: 120.0 INR

Example 2

Enter total units consumed: 450  
Electricity Bill: 1250.0 INR

🚫 Restrictions

• You must not use functions or methods other than main.
• You must use if, if-else, or if-else-if.
• Do not use arrays, loops, or switch-case.