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 find out how many tanks of fuel are needed for a 1500 km drive, follow these steps:

1. **Calculate total fuel consumption for 1500 km:**
   \[
   \text{Fuel consumption} = \frac{9 \, \text{litres}}{100 \, \text{km}} \times 1500 \, \text{km} = \frac{9 \times 1500}{100} = 135 \, \text{litres}
   \]

2. **Calculate how many tanks are needed:**
   \[
   \text{Number of tanks} = \frac{135 \, \text{litres}}{68 \, \text{litres/tank}} = 1.985 \, \text{tanks}
   \]

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

Would you like more details or have any questions?

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Here are 5 related questions to expand your understanding:
1. How many kilometers can you drive on a full tank?
2. What is your car's fuel consumption for a 500 km trip?
3. If fuel efficiency improves to 7 litres/100 km, how many tanks would you need for the same trip?
4. How much fuel will remain in the second tank after completing the 1500 km?
5. What would happen to fuel consumption if you drove at a constant speed of 120 km/h?

**Tip:** Always round up when calculating the number of tanks, since you can't fill a fraction 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 1500km?

Discover how to calculate the number of tanks of fuel needed for a 1500 km drive when your car uses 9 litres per 100 km. With a fuel tank capacity of 68 litres, this example demonstrates key mathematical concepts like ratio, proportion, and unit conversion, suitable for Grades 6-8 students.

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