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, follow these steps:

1. **Determine how much petrol is used per kilometer:**
   You are using **9 liters** of petrol per **100 km**, so per kilometer:

   \[
   \text{Petrol usage per km} = \frac{9}{100} = 0.09 \text{ liters/km}
   \]

2. **Calculate total petrol needed for 1500 km:**
   Multiply the petrol usage per km by the total distance:

   \[
   \text{Total petrol needed} = 1500 \times 0.09 = 135 \text{ liters}
   \]

3. **Determine how many full tanks are needed:**
   Since the car's tank holds **68 liters**, divide the total petrol needed by the tank capacity:

   \[
   \text{Number of tanks} = \frac{135}{68} \approx 1.985
   \]

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

Would you like a detailed breakdown of any part?

Here are 5 related questions:
1. How would the fuel usage change if the consumption was 8 litres per 100 km?
2. What if the distance was 2000 km instead of 1500 km?
3. How far could you drive with only one tank of fuel?
4. How much petrol would you need for a round trip of 3000 km?
5. How does the fuel efficiency impact the total cost of the trip?

**Tip:** Always round up the number of tanks to the next whole number, since you can't use a fraction of a tank in practice.

Learn how to calculate the number of fuel tanks needed to drive 1500 km with a petrol consumption rate of 9 litres per 100 km. This problem covers key concepts in fuel efficiency and distance calculation, using simple proportion and division. Ideal for students in Grades 6-8.

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