Numeracy question. 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?
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 solve this, we can calculate how much fuel is needed for a 1500 km journey and then determine how many full tanks are required.

1. **Calculate the total fuel needed:**
   The car uses 9 litres per 100 km. For 1500 km, the total fuel required will be:
   \[
   \text{Total fuel} = \frac{9 \text{ litres}}{100 \text{ km}} \times 1500 \text{ km} = 135 \text{ litres}
   \]

2. **Calculate how many tanks are needed:**
   The tank holds 68 litres. To find the number of tanks needed for 135 litres:
   \[
   \text{Number of tanks} = \frac{135 \text{ litres}}{68 \text{ litres/tank}} \approx 1.985 \text{ tanks}
   \]
   Since you cannot use a fraction of a tank in practical terms, you will need **2 full tanks** of fuel to cover 1500 km.

Would you like more details on this? Here are 5 follow-up questions:

1. How much petrol would be left in the second tank after 1500 km?
2. How would fuel efficiency change with varying speeds?
3. How much distance could you travel on one full tank?
4. How many kilometres could you drive if the efficiency were 8 litres/100 km?
5. How does a vehicle's fuel consumption typically vary with road conditions?

**Tip:** Monitoring your fuel efficiency can help you save costs and reduce environmental impact.

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?

Learn how to calculate fuel consumption for a 1500 km journey with a car that uses 9 litres per 100 km and a tank capacity of 68 litres. This solution covers key concepts of ratio, proportion, and basic arithmetic, suitable for students in Grades 5-7.

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