At the office building, Level A and Level B had an equal number of chairs at first. If 8 chairs were removed from Level B and 7 times as many chairs were removed from Level A as Level B, the number of chairs in Level B would be 4 times as many as in Level A. Find the number of chairs on each level.
| |
Level A |
Level B |
| Before |
1 u + 56 |
4 u + 8 |
| Change |
- 56 |
- 8 |
| After |
1 u |
4 u |
Number of chairs removed from Level A
= 7 x 8
= 56
Number of chairs on Level A and Level B at first is the same.
4 u + 8 = 1 u + 56
4 u - 1 u = 56 - 8
3 u = 48
1 u = 48 ÷ 3 = 16
Number of chairs on each level
= 1 u + 56
= 16 + 56
= 72
Answer(s): 72
