A car can cover 300 km on 20 liters of petrol. How many liters are needed to cov

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Question: A car can cover 300 km on 20 liters of petrol. How many liters are needed to cover 450 km?

Options:

Correct Answer: 30 liters

Solution:

The car covers 15 km per liter (300 km / 20 liters). For 450 km, it needs 450 km / 15 km/l = 30 liters.

A car can cover 300 km on 20 liters of petrol. How many liters are needed to cover 450 km?

A car can cover 300 km on 20 liters of petrol. How many liters are needed to cover 450 km?

Step 1: Find out how many kilometers the car can travel with one liter of petrol. Divide the total distance (300 km) by the total liters of petrol (20 liters). This gives you 300 km / 20 liters = 15 km per liter.
Step 2: Now, you need to find out how many liters are needed to cover 450 km. To do this, divide the distance you want to travel (450 km) by the distance the car can travel on one liter (15 km/l). This gives you 450 km / 15 km/l = 30 liters.
Step 3: The answer is that the car needs 30 liters of petrol to cover 450 km.

Unit Rate Calculation – Understanding how to calculate the distance covered per unit of fuel (km/l) and using that rate to determine fuel needs for a different distance.
Proportional Reasoning – Applying ratios to solve for unknown quantities based on given relationships between distance and fuel consumption.