There were some marbles in Bag Q and Bag R. After Fabian transferred
15 of the marbles from Bag Q to Bag R, the ratio of the number of marbles in Bag Q to that in Bag R changed to 1 : 8. Find the ratio of the numbers of marbles in Bag R to the number of marbles in Bag Q at first.
|
Bag Q |
Bag R |
Before |
5x1 = 5 u |
31 u |
Change |
- 1x1 = - 1 u |
+ 1 u |
After |
4x1 = 4 u |
|
Comparing Bag Q and Bag R in the end |
1x4 = 4 u |
8x4 = 32 u |
The number of marbles in Bag Q in the end is repeated. Make the number of marbles in Bag Q in the end the same. LCM of 4 and 1 is 4.
At first
Bag R : Bag Q
31: 5
Answer(s): 31: 5