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The problem states that a hotel has 40 rooms. 8 of the rooms are empty and the rest are rented. We are asked to find which equation can be used to find $r$, the number of rented rooms.

ArithmeticSubtractionWord ProblemBasic Arithmetic
2025/3/6

1. Problem Description

The problem states that a hotel has 40 rooms. 8 of the rooms are empty and the rest are rented. We are asked to find which equation can be used to find rr, the number of rented rooms.

2. Solution Steps

We know the total number of rooms is
4

0. We know the number of empty rooms is

8. The number of rented rooms, $r$, is the total number of rooms minus the number of empty rooms.

So, r=40−8r = 40 - 8.
The correct equation is 40−8=r40 - 8 = r.

3. Final Answer

40−8=r40 - 8 = r

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