There were some pencils in Packet Q and Packet R. After Flynn transferred
13 of the pencils from Packet Q to Packet R, the ratio of the number of pencils in Packet Q to that in Packet R changed to 3 : 5. Find the ratio of the numbers of pencils in Packet R to the number of pencils in Packet Q at first.
|
Packet Q |
Packet R |
Before |
3x3 = 9 u |
7 u |
Change |
- 1x3 = - 3 u |
+ 3 u |
After |
2x3 = 6 u |
|
Comparing Packet Q and Packet R in the end |
3x2 = 6 u |
5x2 = 10 u |
The number of pencils in Packet Q in the end is repeated. Make the number of pencils in Packet Q in the end the same. LCM of 2 and 3 is 6.
At first
Packet R : Packet Q
7: 9
Answer(s): 7: 9