Answer: Below
Explanation:
This is a pretty simple problem, so hopefully you catch on to it quickly.
Since we have two measurements for two sides of a rectangle, we know they are referring to square centimeters for both the floor and the tiles. Since the units match up, we can divide.
24 * 20 = 480 cm squared
12 * 10 = 120 cm square.
480/120 = 4 tiles.
Our answer is 4 tiles.