Devi rides the bus to her grandmother’s house every day. She tracked how many minutes the bus rides took for one week:

To calculate the mean, median, range, and midrange of Devi's bus ride times, we first need to summarize her data:

Bus ride times (in minutes): 24, 32, 25, 24, 30, 30, 24.

### 1. Mean:
The mean is calculated by adding all the ride times together and then dividing by the number of ride times.

\[
\text{Mean} = \frac{\text{Sum of ride times}}{\text{Number of ride times}}
\]

Sum of the ride times:

\[
24 + 32 + 25 + 24 + 30 + 30 + 24 = 24 + 32 + 25 + 24 + 30 + 30 + 24 = 189
\]

Number of ride times = 7.

Now, calculate the mean:

\[
\text{Mean} = \frac{189}{7} \approx 27
\]

### 2. Median:
The median is the middle number when the data set is ordered from least to greatest.

Ordering the data:

24, 24, 24, 25, 30, 30, 32

Since there are 7 data points (an odd number), the median is the 4th number in the ordered list:

\[
\text{Median} = 25
\]

### 3. Range:
The range is the difference between the maximum and minimum values in the data set.

Maximum value = 32
Minimum value = 24

\[
\text{Range} = \text{Maximum} - \text{Minimum} = 32 - 24 = 8
\]

### 4. Midrange:
The midrange is the average of the maximum and minimum values.

\[
\text{Midrange} = \frac{\text{Maximum} + \text{Minimum}}{2} = \frac{32 + 24}{2} = \frac{56}{2} = 28
\]

### Summary:
- Mean: 27
- Median: 25
- Range: 8
- Midrange: 28

So, for Devi's bus ride times for the week, the mean is 27 minutes, the median is 25 minutes, the range is 8 minutes, and the midrange is 28 minutes.