An electricity company charges $0.10 per kWh for the first 100 kWh in a month and $0.15 per kWh for everything above 100. Write electric_bill(kwh) returning the bill rounded to 2 decimal places.
Examples
Input: kwh = 150
Output: 17.5
Input: kwh = 80
Output: 8.0
Constraints
0 <= kwh <= 10**6(may be a decimal)
Goals
- Split a quantity into a first tier and an overflow tier without an if statement
- Apply a different rate to each tier