PSLE A bag contains cards of three different colours.
15 of the cards are orange. The ratio of the number of blue cards to that of purple cards is 1 : 1. What is the ratio of the number of orange cards to that of purple cards?
Orange |
Blue |
Purple |
Total |
1x1 |
4x1 |
5x1 |
|
1x2 |
1x2 |
|
1 u |
2 u |
2 u |
5 u |
The total number of purple and blue cards is the combined repeated identity.
Make the total number purple and blue cards the same.
LCM of 4 and 2 = 4
Orange : Purple
1 : 2
Answer(s): 1 : 2