There were some buttons in Packet V and Packet W. After Ian transferred
35 of the buttons from Packet V to Packet W, the ratio of the number of buttons in Packet V to that in Packet W changed to 1 : 5. Find the ratio of the numbers of buttons in Packet V to the number of buttons in Packet W at first.
|
Packet V |
Packet W |
Before |
5x1 = 5 u |
7 u |
Change |
- 3x1 = - 3 u |
+ 3 u |
After |
2x1 = 2 u |
|
Comparing Packet V and Packet W in the end |
1x2 = 2 u |
5x2 = 10 u |
The number of buttons in Packet V in the end is repeated. Make the number of buttons in Packet V in the end the same. LCM of 2 and 1 is 2.
At first
Packet V : Packet W
5 : 7
Answer(s): 5 : 7