Dalia is trying to set a new running record. Las week she ran 4.5 km/h during 45 minutes. Bobby wants to beat her so he started training and got to 5.5 km/h for 35 minutes. Who run the longest distance?

To determine who ran the longest distance, we need to calculate the total distance each person ran using the formula:

\[
\text{Distance} = \text{Speed} \times \text{Time}
\]

Let's calculate the distances for both Dalia and Bobby.

### Dalia's distance:
- Speed = 4.5 km/h
- Time = 45 minutes = \(\frac{45}{60}\) hours = 0.75 hours

\[
\text{Dalia's Distance} = 4.5 \, \text{km/h} \times 0.75 \, \text{hours} = 3.375 \, \text{km}
\]

### Bobby's distance:
- Speed = 5.5 km/h
- Time = 35 minutes = \(\frac{35}{60}\) hours ≈ 0.5833 hours

\[
\text{Bobby's Distance} = 5.5 \, \text{km/h} \times 0.5833 \, \text{hours} ≈ 3.208 \, \text{km}
\]

### Conclusion:
- Dalia ran **3.375 km**.
- Bobby ran **3.208 km**.

Thus, **Dalia** ran the longest distance.

Would you like more details or explanations on this?

Here are five related questions:
1. How can Bobby increase his distance with the same running time?
2. What would happen if both Dalia and Bobby ran for 1 hour at their respective speeds?
3. How much faster would Bobby need to run to cover the same distance as Dalia in 35 minutes?
4. What is the average speed of both runners?
5. How would their distances change if they both ran for 30 minutes?

**Tip**: Always convert time to hours when calculating distance in km/h to maintain consistency in units.

Dalia is trying to set a new running record. Last week she ran 4.5 km/h during 45 minutes. Bobby wants to beat her, so he started training and got to 5.5 km/h for 35 minutes. Who ran the longest distance?

Determine who ran the longest distance between Dalia and Bobby using the formula Distance = Speed × Time. Dalia ran 4.5 km/h for 45 minutes, while Bobby ran 5.5 km/h for 35 minutes. Learn how to calculate and compare their distances with a detailed solution. Suitable for Grades 6-8 students.

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