A car travels 42 on 6 litres of petrol,how far will it travel on 9litres.

x/9 = 42/6

I don't understand

To find out how far the car will travel on 9 liters of petrol, we can first calculate the car's fuel efficiency, which is measured in kilometers per liter (km/L).

Given that the car travels 42 kilometers on 6 liters of petrol, we can calculate its fuel efficiency using the formula:

Fuel Efficiency = Distance Traveled / Amount of Fuel Used

Plugging in the values we have:

Fuel Efficiency = 42 km / 6 L = 7 km/L

Now that we know the car's fuel efficiency is 7 km/L, we can use this information to calculate the distance it will travel on 9 liters of petrol. We simply multiply the fuel efficiency by the amount of fuel:

Distance = Fuel Efficiency * Amount of Fuel
Distance = 7 km/L * 9 L
Distance = 63 km

Therefore, the car will travel 63 kilometers on 9 liters of petrol.