From the information provided, we know the following about the water:
- After 2 minutes, the temperature of the water was 40 degrees Celsius.
- After 4 minutes, the temperature of the water was 60 degrees Celsius.
However, we do not have enough information to determine how long it will take to boil the water, as we don't know the boiling point of water in this context or its initial temperature. In most scenarios, the boiling point is typically 100 degrees Celsius (at standard atmospheric pressure), but without knowing the initial temperature or the rate of heating, we cannot calculate the exact time it will take to reach boiling.
To summarize, we have:
- Temperature after 2 minutes: 40 degrees Celsius
- Temperature after 4 minutes: 60 degrees Celsius
- Insufficient information to determine how long it will take to boil the water.