At the office building, Floor W and Floor X had an equal number of tables at first. If 9 tables were removed from Floor X and 7 times as many tables were removed from Floor W as Floor X, the number of tables in Floor X would be 3 times as many as in Floor W. Find the number of tables on each floor.
| |
Floor W |
Floor X |
| Before |
1 u + 63 |
3 u + 9 |
| Change |
- 63 |
- 9 |
| After |
1 u |
3 u |
Number of tables removed from Floor W
= 7 x 9
= 63
Number of tables on Floor W and Floor X at first is the same.
3 u + 9 = 1 u + 63
3 u - 1 u = 63 - 9
2 u = 54
1 u = 54 ÷ 2 = 27
Number of tables on each floor
= 1 u + 63
= 27 + 63
= 90
Answer(s): 90
