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 need to drive 1500 km, let's break it down:

1. **Determine fuel consumption for 1500 km:**
   Your car uses 9 litres of petrol per 100 km. So, for 1500 km:

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

2. **Calculate how many full tanks are required:**
   The capacity of your tank is 68 litres. To find how many tanks you'll need:

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

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

Would you like a detailed explanation or more assistance?

Here are 5 related questions for further practice:
1. How far can you drive on a full tank of 68 litres?
2. If petrol costs $1.50 per litre, how much will you spend on fuel for the 1500 km trip?
3. What is the fuel efficiency in miles per gallon (mpg)?
4. How many litres would you need for a 2000 km trip?
5. If your fuel efficiency improves to 7 litres per 100 km, how many tanks will you need for 1500 km?

**Tip:** Always round up the number of tanks required, since you can't use part of a tank!

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?

Find out how many fuel tanks are required for a 1500 km drive with a fuel consumption of 9 litres per 100 km and a tank capacity of 68 litres. This detailed step-by-step solution is perfect for students in Grades 6-8, covering fuel efficiency, proportions, and division.

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