How do you calculate the end time if the start time is 11:00 AM and the duration is 4 hours?

The end time is 3:00 PM if the start time is 11:00 AM and the duration is 4 hours.

To calculate the end time, you need to add the duration to the start time. In this case, the start time is 11:00 AM, and the duration is 4 hours. When you add 4 hours to 11:00 AM, you move forward by 4 hours on the clock.

Here's a step-by-step breakdown:
1. Start at 11:00 AM.
2. Add 1 hour to reach 12:00 PM (noon).
3. Add another hour to reach 1:00 PM.
4. Add another hour to reach 2:00 PM.
5. Finally, add the last hour to reach 3:00 PM.

So, 11:00 AM plus 4 hours equals 3:00 PM.

When working with time, it's important to remember that the clock resets after 12:00 PM. This means that after 12:00 PM, the next hour is 1:00 PM, not 13:00 PM. This is known as the 12-hour clock system, which is commonly used in everyday life in the UK.

Understanding how to add hours to a given time is a useful skill, especially for planning and scheduling activities. Practising with different start times and durations can help you become more comfortable with these calculations.