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 will be used to drive 1500 km, we can break the problem into steps:

1. **Calculate the total fuel consumption for 1500 km:**

   Your car uses 9 litres of petrol per 100 km. Therefore, 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 full tanks are needed:**

   The fuel tank holds 68 litres. To find the number of tanks required, divide the total fuel used by the tank capacity:
   \[
   \text{Number of tanks} = \frac{135 \text{ litres}}{68 \text{ litres per tank}} \approx 1.99.
   \]

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

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

Here are 5 related questions:
1. How much petrol would you need to drive 800 km?
2. How far can you drive on a full tank of 68 litres?
3. What would be the fuel consumption in litres if you drove 200 km?
4. If your fuel efficiency improves to 7 litres per 100 km, how many tanks would you need for 1500 km?
5. How much would it cost to drive 1500 km if petrol costs $1.50 per litre?

**Tip:** Keep an eye on fuel consumption, as driving at optimal speeds and maintaining your car regularly can reduce fuel usage.

Discover how to calculate the number of tanks needed for a 1500 km trip with a car that uses 9 litres of petrol per 100 km and has a 68-litre fuel tank. This problem covers key mathematical concepts like ratio and division. Suitable for students in Grades 6-8.

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