The apartment has an area of 48 m, one room has an area of 12 m, and the other 21 m. The rest of the area in the apartment

The apartment has an area of 48 m, one room has an area of 12 m, and the other 21 m. The rest of the area in the apartment is a kitchen, a bath and other utility rooms. What part of the area of the apartment is the kitchen, bathroom and other utility rooms? How many times is the area of one room? less than the second? How many percent of the total area of the apartment are both rooms?

1. Let’s find what is the area of non-residential premises.
48 – (12 + 21) = 15 m².
Let’s calculate which part it is.
48 m² – 1 part,
15 m² – x part.
x = 15/48 = 5/16.
2. Find out what time one room is larger than the other.
21/12 = 7/4 = 1.75.
3. Percentage of two rooms.
48 – 100%,
(12 +21) – x%.
x = 33 * 100/48 = 3300/48 = 68.75%.
Answer: 5/16 part falls on the kitchen, bathroom and utility rooms;
the area of the second room is 1.75 times larger than the first; 68.75% is the area of two rooms.