There were some pencils in Packet E and Packet F. After Charlie transferred
45 of the pencils from Packet E to Packet F, the ratio of the number of pencils in Packet E to that in Packet F changed to 2 : 9. Find the ratio of the numbers of pencils in Packet F to the number of pencils in Packet E at first.
|
Packet E |
Packet F |
Before |
5x2 = 10 u |
1 u |
Change |
- 4x2 = - 8 u |
+ 8 u |
After |
1x2 = 2 u |
|
Comparing Packet E and Packet F in the end |
2x1 = 2 u |
9x1 = 9 u |
The number of pencils in Packet E in the end is repeated. Make the number of pencils in Packet E in the end the same. LCM of 1 and 2 is 2.
At first
Packet F : Packet E
1: 10
Answer(s): 1: 10