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'll need to drive 1500 km, follow these steps:

1. **Determine the total fuel required**:
   - The car uses **9 litres of petrol per 100 km**.
   - For 1500 km, you will use:
     \[
     \frac{9 \text{ litres}}{100 \text{ km}} \times 1500 \text{ km} = 135 \text{ litres}.
     \]

2. **Determine how many tanks are needed**:
   - The tank holds **68 litres**.
   - To drive 1500 km, you'll need:
     \[
     \frac{135 \text{ litres}}{68 \text{ litres per tank}} \approx 1.99 \text{ tanks}.
     \]

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

Would you like more details on the solution or have any further questions?

### Related Questions:
1. How far can you drive with a full tank of 68 litres?
2. If petrol usage increases to 10 litres / 100 km, how many tanks will you need for 1500 km?
3. How much fuel would you need to drive 2000 km with the same fuel efficiency?
4. What is your fuel efficiency in miles per gallon if 1 mile ≈ 1.609 km?
5. How much money will you spend on fuel for 1500 km if petrol costs $1.50 per litre?

### Tip:
Always keep track of your car’s fuel efficiency and tank size when planning long trips, as it helps in budgeting and avoiding running out of fuel!

Learn how to calculate the number of fuel tanks required for a 1500 km trip, given a car's fuel efficiency of 9 litres per 100 km and a 68-litre tank capacity. This problem covers key concepts such as fuel efficiency, ratio, and division, suitable for students in Grades 6-8.

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