At the office building, Floor W and Floor X had an equal number of chairs at first. If 6 chairs were removed from Floor X and 3 times as many chairs were removed from Floor W as Floor X, the number of chairs in Floor X would be 4 times as many as in Floor W. Find the number of chairs on each floor.
| |
Floor W |
Floor X |
| Before |
1 u + 18 |
4 u + 6 |
| Change |
- 18 |
- 6 |
| After |
1 u |
4 u |
Number of chairs removed from Floor W
= 3 x 6
= 18
Number of chairs on Floor W and Floor X at first is the same.
4 u + 6 = 1 u + 18
4 u - 1 u = 18 - 6
3 u = 12
1 u = 12 ÷ 3 = 4
Number of chairs on each floor
= 1 u + 18
= 4 + 18
= 22
Answer(s): 22
