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 calculate how many tanks of fuel are needed to drive 1500 km, let's follow these steps:

1. **Determine the fuel consumption per 100 km**:  
   You use 9 litres of petrol per 100 km.

2. **Calculate the total fuel needed for 1500 km**:  
   Since you travel 1500 km, the total fuel consumption is:
   \[
   \frac{1500}{100} \times 9 = 15 \times 9 = 135 \text{ litres}
   \]

3. **Calculate how many tanks of fuel you need**:  
   Each tank holds 68 litres, so the number of tanks required is:
   \[
   \frac{135}{68} \approx 1.99
   \]

So, you'll need **approximately 2 full tanks of fuel** to drive 1500 km.

Would you like more details or have any questions?

Here are 5 related questions:
1. How much petrol will be left in the tank after driving 1500 km?
2. How far can you drive with half a tank of fuel?
3. What is your fuel consumption in litres per kilometre?
4. How much fuel would you need for a 2000 km journey?
5. How many kilometres can you drive on a full tank?

**Tip**: Regular maintenance like proper tire inflation can improve fuel efficiency, reducing fuel consumption over long distances.

Find out how many fuel tanks you'll need to drive 1500 km with a petrol consumption rate of 9 litres per 100 km and a tank capacity of 68 litres. This practical problem helps students in Grades 6-8 understand unit conversion, fuel efficiency, and ratio calculations.

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