We can interpret the number line based on the description you provided. Here's a step-by-step breakdown:

1. The time range on the number line goes from 1:45 to 2:15, with tick marks every 1 unit. This indicates each tick mark represents 5 minutes.

2. Ahmet's start time is mentioned as 2 tick marks after 1:45:

   • Each tick represents 5 minutes, so 2 tick marks after 1:45 is $1:45 + 10 \text{ minutes} = 1:55$.
   • Therefore, Ahmet started walking at 1:55.

3. Ahmet's finish time is 2 tick marks after 2:10:

   • Adding 10 minutes to 2:10 gives $2:10 + 10 \text{ minutes} = 2:20$.
   • Therefore, Ahmet finished walking at 2:20.

4. Now, to determine how long Ahmet walked:

   • Ahmet started at 1:55 and finished at 2:20.
   • The time difference is $2:20 - 1:55 = 25 \text{ minutes}$.

Summary:

Ahmet walked for 25 minutes.

Would you like to dive into more details or have any further questions?

Here are some related questions:

1. What is the time span between 1:45 and 2:15?
2. If Ahmet walked back, how long would it take assuming the return trip was faster by 5 minutes?
3. How would the scenario change if Ahmet started at 2:00 and finished at 2:30?
4. How do we calculate time differences when crossing over into the next hour?
5. What are some real-life scenarios where calculating time differences is useful?

Tip: When working with time intervals, always ensure to account for the 60-minute cycle to avoid mistakes.