There were some coins in Bag X and Bag Y. After Peter transferred
34 of the coins from Bag X to Bag Y, the ratio of the number of coins in Bag X to that in Bag Y changed to 2 : 7. Find the ratio of the numbers of coins in Bag Y to the number of coins in Bag X at first.
|
Bag X |
Bag Y |
Before |
4x2 = 8 u |
1 u |
Change |
- 3x2 = - 6 u |
+ 6 u |
After |
1x2 = 2 u |
|
Comparing Bag X and Bag Y in the end |
2x1 = 2 u |
7x1 = 7 u |
The number of coins in Bag X in the end is repeated. Make the number of coins in Bag X in the end the same. LCM of 1 and 2 is 2.
At first
Bag Y : Bag X
1: 8
Answer(s): 1: 8