Question

Car usses 65 L of petrol to travel 728 km, while Hanis car uses 48 L in 552 km.

A) which car is more economical? provide calculations to support your answer
B) how much petrol would each car use to travel 830 km?​

Answer 1

To determine which car is more economical, the fuel efficiency of each car is calculated. The first car gets 11.2 km/L, while Hanis car is slightly more efficient with 11.5 km/L. To travel 830 km, the first car would need approximately 74.11 L of petrol, while Hanis car would require about 72.17 L.

Step-by-step explanation:

To determine which car is more economical, we need to calculate the fuel efficiency for each car. Fuel efficiency is typically given in kilometers per liter (km/L), which is the distance that can be traveled per unit of fuel.

For the first car:

• Fuel efficiency = Distance/Fuel Used = 728 km / 65 L = 11.2 km/L

For Hanis car:

• Fuel efficiency = Distance/Fuel Used = 552 km / 48 L = 11.5 km/L

Since Hanis car has a higher fuel efficiency rating of 11.5 km/L compared to the first car's 11.2 km/L, Hanis car is more economical.

To calculate how much petrol each car would use to travel 830 km, we use the fuel efficiency of each car.

For the first car:

• Petrol used = Total Distance / Fuel Efficiency = 830 km / 11.2 km/L = 74.11 L (rounded to two decimal places)

For Hanis car:

• Petrol used = Total Distance / Fuel Efficiency = 830 km / 11.5 km/L = 72.17 L (rounded to two decimal places)