There were some erasers in Bag E and Bag F. After Cole transferred
23 of the erasers from Bag E to Bag F, the ratio of the number of erasers in Bag E to that in Bag F changed to 3 : 8. Find the ratio of the numbers of erasers in Bag F to the number of erasers in Bag E at first.
|
Bag E |
Bag F |
Before |
3x3 = 9 u |
2 u |
Change |
- 2x3 = - 6 u |
+ 6 u |
After |
1x3 = 3 u |
|
Comparing Bag E and Bag F in the end |
3x1 = 3 u |
8x1 = 8 u |
The number of erasers in Bag E in the end is repeated. Make the number of erasers in Bag E in the end the same. LCM of 1 and 3 is 3.
At first
Bag F : Bag E
2: 9
Answer(s): 2: 9