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The problem is as follows:

- A vehicle (car A) needs to transport **500 boxes** from a factory to a shop.
- The maximum load capacity of the vehicle is **865 kg**.
- Each box weighs **20 kg**.
- The driver's weight is **65 kg**.
- The distance between the factory and the shop is **15 km** (one way, so 30 km round trip).

We are asked to find how many trips the vehicle needs to make to transport all 500 boxes, given that the driver must return to the factory each time after delivering the boxes.

### Step-by-step calculation:

1. **Maximum capacity for boxes per trip**:
   The car's maximum load is 865 kg, but since the driver weighs 65 kg, the remaining capacity for the boxes is:
   \[
   865 \, \text{kg} - 65 \, \text{kg} = 800 \, \text{kg}
   \]
   Given that each box weighs 20 kg, the car can carry:
   \[
   \frac{800 \, \text{kg}}{20 \, \text{kg/box}} = 40 \, \text{boxes per trip}
   \]

2. **Total number of trips**:
   To transport all 500 boxes, we need:
   \[
   \frac{500 \, \text{boxes}}{40 \, \text{boxes/trip}} = 12.5
   \]
   Since the driver cannot make half a trip, we round up to **13 trips**.

Therefore, the minimum number of trips the driver needs to make is **13 trips**.

Would you like further details on any part of this solution? Here are some related questions for deeper exploration:

1. How much total distance will the driver cover after 13 trips?
2. What is the total weight transported in each trip, including the driver's weight?
3. If the number of boxes increased to 600, how many trips would be needed?
4. What if the driver could take 2 assistants who weigh 70 kg each? How would that affect the total trips?
5. How could the efficiency of this transportation process be improved?

**Tip**: For transportation problems, always consider weight constraints and round-trip distances to avoid underestimating the number of trips.

Sebuah mobil A pengangkut barang akan mendistribusikan sebanyak 500 kotak dari pabrik ke sebuah toko. Berat beban maksimal mobil tersebut adalah 865 kg dan setiap kotak memiliki berat sebesar 20 kg. Diketahui berat supir pengangkut adalah 65 kg dan jarak tempuh yang harus dilalui supir dari pabrik ke toko sejauh 15 km (begitu pun sebaliknya). Jika seluruh kotak harus didistribusikan ke toko tersebut, berapa kali minimal pengangkutan yang harus dilakukan oleh supir hingga ia kembali ke pabrik.

Learn how to calculate the minimum number of trips required to transport 500 boxes weighing 20 kg each, using a vehicle with a maximum load capacity of 865 kg and a driver weighing 65 kg. This problem involves weight distribution, division, and rounding. Suitable for students in Grades 9-11.

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