Your car petrol usage is 9 litres / 100 km. Your tank holds 68 litres. How many tanks of fuel will you use to drive 1500km?

To solve how many tanks of fuel you'll need to drive 1500 km, we can break it down into steps:

1. **Find how much fuel is used per 100 km**: 
   The car uses 9 litres for every 100 km.

2. **Calculate total fuel needed for 1500 km**:
   Since 1500 km is 15 times more than 100 km:
   \[
   \text{Total fuel used} = 9 \times 15 = 135 \, \text{litres}
   \]

3. **Determine how many tanks of fuel are needed**:
   Your fuel tank holds 68 litres. To find out how many tanks are required for 135 litres, divide the total fuel needed by the tank capacity:
   \[
   \text{Number of tanks} = \frac{135}{68} \approx 1.99
   \]
   You will need approximately 2 full tanks of fuel to drive 1500 km.

### Conclusion:
You will need **2 tanks of fuel** to complete the journey.

Would you like more details or have any questions?

Here are 5 related questions:
1. How far can you drive on a full tank of fuel?
2. What is your car’s fuel efficiency compared to other vehicles?
3. How does the fuel efficiency change with different driving conditions?
4. How much would the fuel cost for this 1500 km trip?
5. What is the impact of carrying extra weight on fuel efficiency?

**Tip**: Maintaining the correct tire pressure can improve fuel efficiency!

Learn how to calculate fuel usage for a 1500 km trip with a car that uses 9 litres per 100 km and a 68-litre fuel tank. Follow step-by-step instructions to determine the number of fuel tanks required for the journey. Suitable for Grades 5-7.

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