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

1. **Find the total fuel needed for 1500 km:**

   Given that the car uses 9 litres per 100 km, we can calculate the total fuel consumption for 1500 km as:
   
   \[
   \text{Total fuel} = \frac{9 \text{ litres}}{100 \text{ km}} \times 1500 \text{ km} = \frac{9 \times 1500}{100} = 135 \text{ litres}
   \]

2. **Determine how many tanks are needed:**

   Since the car's tank holds 68 litres, we can find the number of tanks required by dividing the total fuel needed by the tank capacity:
   
   \[
   \text{Number of tanks} = \frac{135 \text{ litres}}{68 \text{ litres/tank}} \approx 1.99
   \]

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

Would you like further clarification or more details?

Here are 5 related questions:
1. How much fuel would be left after 1500 km if you filled exactly 2 tanks?
2. How many kilometres can you drive with a full tank of petrol?
3. What is the total cost of fuel for this trip if petrol costs $1.50 per litre?
4. How far could you drive if your tank was only half full at the start of the trip?
5. If you improved your car’s fuel efficiency to 7 litres per 100 km, how many tanks would you need for 1500 km?

**Tip:** Always keep a buffer of fuel for unexpected stops or detours when planning long trips.

Find out how many tanks of fuel are needed to drive 1500 km if your car consumes 9 litres per 100 km and the tank holds 68 litres. This problem involves calculating fuel consumption and applying basic arithmetic. Suitable for students in Grades 6-8.

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