PSLE A bag contains cards of three different colours.
12 of the cards are purple. The ratio of the number of green cards to that of blue cards is 2 : 1. What is the ratio of the number of purple cards to that of blue cards?
Purple |
Green |
Blue |
Total |
1x3 |
1x3 |
2x3 |
|
2x1 |
1x1 |
|
3 u |
2 u |
1 u |
6 u |
The total number of blue and green cards is the combined repeated identity.
Make the total number blue and green cards the same.
LCM of 1 and 3 = 3
Purple : Blue
3 : 1
Answer(s): 3 : 1