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 how many tanks of fuel you'll use to drive 1500 km, follow these steps:

1. **Calculate the total fuel consumption for 1500 km:**
   - Fuel consumption is 9 litres per 100 km.
   - For 1500 km:
     \[
     \text{Fuel used} = \left(\frac{9 \, \text{litres}}{100 \, \text{km}}\right) \times 1500 \, \text{km} = 135 \, \text{litres}
     \]

2. **Calculate how many tanks are needed:**
   - Your car’s fuel tank holds 68 litres.
   - Number of tanks needed:
     \[
     \text{Tanks} = \frac{135 \, \text{litres}}{68 \, \text{litres per tank}} \approx 1.99 \, \text{tanks}
     \]

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

Would you like further details or clarification? Here are some related questions:

1. How would fuel consumption change if you drove 1200 km instead of 1500 km?
2. If the petrol consumption rate were reduced to 8 litres per 100 km, how many tanks would you need?
3. What is the cost of the journey if fuel costs 1.5 units per litre?
4. How far can you travel on a single tank of fuel?
5. How many litres would you save by reducing consumption to 8 litres per 100 km?

**Tip:** Keeping tires properly inflated can reduce fuel consumption by up to 3%.

Learn how to calculate the number of fuel tanks needed to drive 1500 km with a fuel consumption of 9 litres per 100 km. This solution uses proportions and division to determine fuel usage, helping you understand how many full tanks are required. Suitable for Grades 5-7.

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