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