At the factory, Storey W and Storey X had an equal number of machines at first. If 6 machines were removed from Storey X and 7 times as many machines were removed from Storey W as Storey X, the number of machines in Storey X would be 4 times as many as in Storey W. Find the number of machines on each storey.
| |
Storey W |
Storey X |
| Before |
1 u + 42 |
4 u + 6 |
| Change |
- 42 |
- 6 |
| After |
1 u |
4 u |
Number of machines removed from Storey W
= 7 x 6
= 42
Number of machines on Storey W and Storey X at first is the same.
4 u + 6 = 1 u + 42
4 u - 1 u = 42 - 6
3 u = 36
1 u = 36 ÷ 3 = 12
Number of machines on each storey
= 1 u + 42
= 12 + 42
= 54
Answer(s): 54
