There were some buttons in Bag L and Bag M. After Ivan transferred
35 of the buttons from Bag L to Bag M, the ratio of the number of buttons in Bag L to that in Bag M changed to 3 : 8. Find the ratio of the numbers of buttons in Bag M to the number of buttons in Bag L at first.
|
Bag L |
Bag M |
Before |
5x3 = 15 u |
7 u |
Change |
- 3x3 = - 9 u |
+ 9 u |
After |
2x3 = 6 u |
|
Comparing Bag L and Bag M in the end |
3x2 = 6 u |
8x2 = 16 u |
The number of buttons in Bag L in the end is repeated. Make the number of buttons in Bag L in the end the same. LCM of 2 and 3 is 6.
At first
Bag M : Bag L
7: 15
Answer(s): 7: 15