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The problem states that the Bartlett family drove 550 miles in 11 hours yesterday and will drive 200 miles today. They are asking how long they will drive today if they maintain the same average rate.

### Step-by-step solution:
1. **Find the average speed:**
   - They drove 550 miles in 11 hours yesterday.
   - The average speed (rate) is calculated by dividing the total distance by the total time:
   \[
   \text{Average speed} = \frac{550 \text{ miles}}{11 \text{ hours}} = 50 \text{ miles per hour (mph)}
   \]

2. **Determine today's driving time:**
   - Today, they will drive 200 miles at the same average speed of 50 mph.
   - The time it will take is:
   \[
   \text{Time} = \frac{200 \text{ miles}}{50 \text{ mph}} = 4 \text{ hours}
   \]

Thus, **the Bartlett family will drive for 4 hours today**.

Do you need more details or have any questions?

### Follow-up questions:
1. How would the time change if they drove at a different speed today?
2. What would be the total time spent driving over both days?
3. What would happen if the distance today was 300 miles instead of 200 miles?
4. How much time would they save if they increased their speed by 10 mph today?
5. How many hours would it take if they drove 100 miles tomorrow at the same average speed?

### Tip:
Always remember that average speed is calculated by dividing the distance by time, and this formula is handy for solving various distance-time-speed problems!

If the Bartletts drive at the same average rate, how long will they drive today?

Learn how to calculate the driving time for the Bartlett family. They drove 550 miles in 11 hours yesterday and will drive 200 more miles today at the same speed. This solution involves key concepts like speed, distance, and time, and is suitable for students in Grades 6-8.

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