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