There were some marbles in Packet Q and Packet R. After Justin transferred
15 of the marbles from Packet Q to Packet R, the ratio of the number of marbles in Packet Q to that in Packet R changed to 1 : 5. Find the ratio of the numbers of marbles in Packet Q to the number of marbles in Packet R at first.
|
Packet Q |
Packet R |
Before |
5x1 = 5 u |
19 u |
Change |
- 1x1 = - 1 u |
+ 1 u |
After |
4x1 = 4 u |
|
Comparing Packet Q and Packet R in the end |
1x4 = 4 u |
5x4 = 20 u |
The number of marbles in Packet Q in the end is repeated. Make the number of marbles in Packet Q in the end the same. LCM of 4 and 1 is 4.
At first
Packet Q : Packet R
5 : 19
Answer(s): 5 : 19