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 find out how many tanks of fuel you will need to drive 1500 km, we can follow these steps:

1. **Fuel consumption per 100 km**: Your car uses 9 litres of petrol for every 100 km.
2. **Fuel consumption for 1500 km**: 

   To calculate the total amount of fuel needed for 1500 km:
   \[
   \frac{9 \, \text{litres}}{100 \, \text{km}} \times 1500 \, \text{km} = 135 \, \text{litres}
   \]

3. **Number of tanks required**: Your fuel tank holds 68 litres. Now, divide the total fuel required by the capacity of the tank:
   \[
   \frac{135 \, \text{litres}}{68 \, \text{litres/tank}} \approx 1.99 \, \text{tanks}
   \]

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

Would you like more details or have any questions?

Here are 5 related questions to explore:
1. How can you reduce your fuel consumption on long drives?
2. What factors affect a car's fuel efficiency?
3. How does driving at higher speeds influence fuel usage?
4. What is the environmental impact of driving with this fuel consumption rate?
5. How could hybrid or electric vehicles alter this calculation?

**Tip:** Keeping your tires properly inflated can improve fuel efficiency.

Find out how many tanks of fuel you will need for a 1500 km drive with a fuel consumption rate of 9 litres per 100 km and a tank capacity of 68 litres. This problem involves basic arithmetic and unit conversion, suitable for students in Grades 5-7.

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