PSLE A bag contains coins of three different colours.
12 of the coins are purple. The ratio of the number of orange coins to that of red coins is 2 : 3. What is the ratio of the number of purple coins to that of red coins?
Purple |
Orange |
Red |
Total |
1x5 |
1x5 |
2x5 |
|
2x1 |
3x1 |
|
5 u |
2 u |
3 u |
10 u |
The total number of red and orange coins is the combined repeated identity.
Make the total number red and orange coins the same.
LCM of 1 and 5 = 5
Purple : Red
5 : 3
Answer(s): 5 : 3