PSLE A bag contains coins of three different colours.
14 of the coins are red. The ratio of the number of purple coins to that of green coins is 3 : 1. What is the ratio of the number of purple coins to that of red coins?
Red |
Purple |
Green |
Total |
1x4 |
3x4 |
4x4 |
|
3x3 |
1x3 |
|
4 u |
9 u |
3 u |
16 u |
The total number of green and purple coins is the combined repeated identity.
Make the total number green and purple coins the same.
LCM of 3 and 4 = 12
Purple : Red
9 : 4
Answer(s): 9 : 4