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 problem, we need to calculate the total amount of fuel needed for a 1500 km drive and then determine how many full tanks this corresponds to.

### Step 1: Calculate the total fuel consumption for 1500 km.
You know the car's fuel consumption is 9 litres per 100 km. So, for 1500 km, the fuel required will be:

\[
\text{Fuel consumption} = \left(\frac{9 \text{ litres}}{100 \text{ km}}\right) \times 1500 \text{ km} = 135 \text{ litres}
\]

### Step 2: Determine the number of full tanks required.
The car's tank holds 68 litres. So, to find out how many tanks of fuel are required:

\[
\text{Number of tanks} = \frac{135 \text{ litres}}{68 \text{ litres/tank}} \approx 1.99 \text{ tanks}
\]

Since you can't fill a fraction of a tank, you'll need **2 full tanks** of fuel to drive 1500 km.

Would you like more details on any part of this solution? 

Here are some related questions:
1. How many kilometers can you drive on a full tank?
2. What is the fuel consumption in miles per gallon?
3. How would the result change if the fuel consumption was 8 litres/100 km?
4. What would be the total cost if petrol costs $1.50 per litre?
5. How far could you drive if you filled the tank only halfway?

**Tip:** Always round up when calculating the number of full tanks needed, as partial tanks won't be sufficient for the entire journey.

Your car petrol usage is 9 litres / 100 km. Your tank holds 68 litres. How many tanks of fuel will you use to drive 1500 km?

Learn how to calculate the number of fuel tanks needed to drive 1500 km with a car that consumes 9 litres per 100 km and has a 68-litre tank. This step-by-step guide covers ratio, proportion, and basic arithmetic concepts, suitable for Grades 6-8.

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