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 this, we'll follow these steps:

1. **Determine how much petrol is used for 1500 km**:  
   Your car uses 9 litres per 100 km, so for 1500 km:
   \[
   \text{Petrol used} = \left( \frac{9 \, \text{litres}}{100 \, \text{km}} \right) \times 1500 \, \text{km} = 135 \, \text{litres}
   \]

2. **Determine how many tanks of petrol are needed**:  
   Your tank holds 68 litres, so the number of tanks required is:
   \[
   \text{Number of tanks} = \frac{135 \, \text{litres}}{68 \, \text{litres/tank}} = 1.985 \approx 2 \, \text{tanks}
   \]

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

Would you like more details or have any questions?

Here are 5 related questions for further exploration:
1. How many kilometers can you drive with one full tank?
2. How much fuel will you need for a 2000 km journey?
3. If the fuel efficiency drops to 10 litres per 100 km, how many tanks will you need for 1500 km?
4. How many tanks are required for a round trip of 1800 km?
5. If fuel costs $1.50 per litre, how much will it cost to drive 1500 km?

**Tip**: Regularly maintaining your car's tire pressure and engine can improve fuel efficiency and save on petrol!

Learn how to calculate how many tanks of fuel you'll need for a 1500 km journey based on a fuel consumption rate of 9 litres per 100 km and a tank capacity of 68 litres. This problem involves key concepts such as ratio, unit conversion, and division. Suitable for students in Grades 5-7.

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