https://file.aiquickdraw.com/mathbot/file/1725955342133rb53zwgt.jpg

The image presents a series of problems related to hotel room occupancy, with a diagram illustrating the number of available rooms for different room types across two periods: weekdays (hari kerja) and weekends (akhir pekan). I'll address the specific questions based on the image:

### Question 12:
*Persentase total rata-rata keterisian kamar pada hari kerja terhadap kapasitas yang tersedia adalah...*

To calculate this, we sum the percentage occupancy rates during weekdays for all room types and divide by the total number of room types.

From the diagram, the weekday occupancy rates are:
- **Standard**: 22%
- **Spesial A**: 35%
- **Spesial B**: 0%
- **Bisnis A**: 15%
- **Bisnis B**: 10%

The total percentage is:
\[ 22 + 35 + 0 + 15 + 10 = 82\% \]

Since there are 5 room types:
\[
\text{Average occupancy rate} = \frac{82}{5} = 16.4\%
\]

None of the choices match exactly, but **option B (16%)** is the closest.

### Question 13:
*Pada tiap kamar disediakan 2 botol air mineral per hari...*

For this question, a certain proportion of rooms consume either both bottles, one bottle, or none.

Let’s break it down:
- The probability of consuming **1 bottle** is given as 0.25.
- The probability of **not consuming any bottle** is 0.1.

Hence, the probability of consuming **both bottles** is \( 1 - 0.25 - 0.1 = 0.65 \).

The total number of bottles needed per day per room can be calculated as:
\[
\text{Total bottles} = 2 \times (0.65) + 1 \times (0.25) + 0 \times (0.1) = 1.3 + 0.25 + 0 = 1.55
\]

Therefore, the average number of bottles used per room per day is **1.55 bottles**. The closest answer is **option A: 1.55**.

### Question 14:
*Pada akhir pekan, kamar yang memiliki persentase rata-rata keterisian di atas 90% adalah...*

From the diagram, during the weekend, the percentage occupancy rates are:
- **Standard**: 30%
- **Spesial A**: 40%
- **Spesial B**: 40%
- **Bisnis A**: 20%
- **Bisnis B**: 15%

None of the room types have an occupancy rate above 90% on weekends, so **option E (None of the above)** is the correct answer.

---

Would you like more details on any of these problems or calculations? 

Here are five related questions for practice:
1. If the occupancy rate for "Bisnis A" doubled on weekends, what would the new rate be?
2. What is the total number of rooms in the "Standard" and "Spesial A" categories combined?
3. How would the total average percentage of weekday occupancy change if "Spesial B" had a 25% occupancy rate?
4. Calculate the average occupancy rate for weekends across all room types.
5. What is the minimum number of rooms that need to be occupied to achieve a 50% overall weekday occupancy?

**Tip**: Always check the axis labels and legends on a diagram to ensure you're interpreting data correctly!

The image presents a series of problems related to hotel room occupancy, with a diagram illustrating the number of available rooms for different room types across weekdays and weekends. The questions involve calculating average room occupancy rates, probabilities, and determining room types with high occupancy rates.

Solve hotel room occupancy problems with percentages and probabilities, including calculating the average room occupancy rate for weekdays and weekends, and determining bottle usage probabilities. Learn key concepts for Grades 9-11.

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