Question

The number of rooms on the ground floor of the building is 12 less than the twice of the number on the first floor. If the first floor has x rooms, how many rooms does the ground floor have?

Answer 1

Hint: Assume as given in the question that no of rooms on first floor = x and on ground floor = y and from equation.

Complete step-by-step answer:
Given,
The number of rooms on the first floor = x
Now, according to the question,
If we subtract 12 from twice the number of rooms on the first floor. We will get the number of rooms on the ground floor.
Therefore
If number of rooms on ground floor y
Then,
y = 2x – 12
Hence, the number of rooms on the ground floor is equal to 2x – 12 rooms.

Note: In this type of question, use variables to form an expression according to question and solve it to obtain the answer asked.