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 you will use for a 1500 km trip, follow these steps:

1. **Fuel usage per 100 km**: Your car consumes 9 litres per 100 km.
2. **Fuel usage for 1500 km**:
   \[
   \frac{9 \text{ litres}}{100 \text{ km}} \times 1500 \text{ km} = 135 \text{ litres}
   \]
   So, you will need 135 litres of petrol for the entire trip.

3. **Tank capacity**: Your tank holds 68 litres.
4. **Number of tanks required**:
   \[
   \frac{135 \text{ litres}}{68 \text{ litres/tank}} \approx 1.99
   \]
   Therefore, you will need approximately **2 tanks** of fuel to cover the 1500 km.

Would you like more details on the steps, or do you have any questions?

Here are 5 related questions for further practice:
1. If your car's fuel consumption increased to 10 litres per 100 km, how many tanks would you need for 1500 km?
2. How far could you travel if you filled your tank with 68 litres?
3. What if your trip was 2000 km—how many tanks of fuel would you need?
4. If petrol costs $1.50 per litre, how much would the 1500 km trip cost?
5. How much fuel would be left in the tank after driving 1000 km?

**Tip**: Always check your car’s actual fuel consumption over different conditions (e.g., city vs. highway driving), as this can vary from the standard rate!

Learn how to calculate the number of fuel tanks required for a 1500 km journey when a car consumes 9 litres per 100 km and the tank capacity is 68 litres. This problem covers key mathematical concepts such as ratio, unit conversion, and division, suitable for students in Grades 5-7.

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