PSLE A bag contains cards of three different colours.
16 of the cards are purple. The ratio of the number of orange cards to that of red cards is 2 : 1. What is the ratio of the number of orange cards to that of purple cards?
Purple |
Orange |
Red |
Total |
1x3 |
5x3 |
6x3 |
|
2x5 |
1x5 |
|
3 u |
10 u |
5 u |
18 u |
The total number of red and orange cards is the combined repeated identity.
Make the total number red and orange cards the same.
LCM of 5 and 3 = 15
Orange : Purple
10 : 3
Answer(s): 10 : 3