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 determine how many tanks of fuel you'll use to drive 1500 km, we'll break the problem into two steps:

1. **Calculate the total fuel required to drive 1500 km:**

   Your car uses 9 litres of petrol for every 100 km. So, to drive 1500 km:
   \[
   \text{Fuel needed} = \left( \frac{9}{100} \right) \times 1500 = 135 \, \text{litres}
   \]

2. **Determine how many tanks of fuel are required:**

   Since your tank holds 68 litres:
   \[
   \text{Number of tanks} = \frac{135}{68} \approx 1.985
   \]

   You will need approximately **2 full tanks** of fuel to cover 1500 km.

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

Here are 5 related questions to consider:
1. How much fuel would you need for a 2000 km trip?
2. If your fuel efficiency improved to 7 litres/100 km, how would that affect the number of tanks needed?
3. How far could you drive on one full tank if your fuel usage stayed the same?
4. What would the cost of fuel be for the 1500 km trip if petrol costs $1.50 per litre?
5. How would carrying extra weight in the car affect your fuel efficiency?

**Tip:** Keeping your tires properly inflated can improve your car's fuel efficiency, reducing the amount of fuel used over long distances.

Learn how to calculate the number of fuel tanks needed for a 1500 km trip when your car uses 9 litres per 100 km. This guide includes step-by-step calculations and the key formulas used, ideal for students in Grades 6-8.

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