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