The mass of 1 liter of kerosene is equal to 4/5 kg; the mass of how many liters of kerosene is 1 kg.

1 liter of kerosene – 4/5 kg.

Let’s define the volume of 1 kilogram of kerosene. We write down the solution.

We make the proportion.

1 liter of kerosene – 4/5 kg.

Chl of kerosene – 1 kg.

Let’s define the unknown value of x.

X = 1 * 1: 4/5 = 1: 4/5 = 1 * 5/4 = 1.25 liters.

This means that 1 kilogram of kerosene is equal to 1.25 liters.

Answer: 1 kilogram of kerosene is equal to 1.25 liters