4.5 kg of paint was used to paint 72% of the floor area. How much paint will go to the remaining floor area?

First, let’s find out how much paint is used to cover one percent of the surface of a given floor.

In the initial data for this assignment, it is reported that it took 4 and a half kilograms of paint to cover 72% of the surface of this floor.

Therefore, it takes 4.5 / 72 = 0.0625 kg of paint to cover one percent of the surface of a given floor.

Then, to cover the entire floor, that is, 100%, you need 100 * 0.0625 = 6.25 kg of paint.

Answer: You need 6.25 kg of paint.