PSLE A bag contains cards of three different colours.
14 of the cards are purple. The ratio of the number of red cards to that of blue cards is 3 : 5. What is the ratio of the number of red cards to that of purple cards?
Purple |
Red |
Blue |
Total |
1x8 |
3x8 |
4x8 |
|
3x3 |
5x3 |
|
8 u |
9 u |
15 u |
32 u |
The total number of blue and red cards is the combined repeated identity.
Make the total number blue and red cards the same.
LCM of 3 and 8 = 24
Red : Purple
9 : 8
Answer(s): 9 : 8