Russell drove his Land Rover 500 km before he needed to refill his tank with 70 L of petrol. Calculate the number of litres Russell used per 100 km.

To find out the number of liters Russell used per 100 km, we start by calculating his fuel consumption rate in liters per 100 km. 

### Step-by-Step Solution

1. **Determine the fuel consumption rate**:  
   Russell drove 500 km and used 70 liters of petrol. The fuel consumption rate in liters per 100 km is given by the formula:

   \[
   \text{Fuel consumption rate} = \left( \frac{\text{Liters used}}{\text{Distance driven}} \right) \times 100
   \]

2. **Substitute the values**:

   \[
   \text{Fuel consumption rate} = \left( \frac{70}{500} \right) \times 100
   \]

3. **Calculate the result**:

   \[
   \text{Fuel consumption rate} = 0.14 \times 100 = 14
   \]

### Answer

Russell used **14 liters per 100 km**.

---

Would you like more details or have any questions? Here are 5 related questions to explore further:

1. How can you calculate the total cost of petrol if the price per liter is known?
2. How would the fuel consumption change if the distance driven was different but the liters used were the same?
3. What are some factors that might affect a vehicle's fuel consumption rate?
4. How do you calculate fuel efficiency in miles per gallon (mpg)?
5. What are the environmental impacts of high fuel consumption?

**Tip:** Regular maintenance and proper tire inflation can improve fuel efficiency.

Learn how to calculate fuel consumption using the formula for liters per 100 km. In this example, Russell drives 500 km and uses 70 liters of petrol, resulting in a fuel consumption rate of 14 liters per 100 km. This step-by-step solution covers key mathematical concepts, suitable for students in Grades 5-7.

Math Problem Statement

Solution

Ask a new question for Free

By Image

Math Problem Analysis

Mathematical Concepts

Formulas

Theorems

Suitable Grade Level

Related Recommendation