PSLE A bag contains cards of three different colours.
14 of the cards are brown. The ratio of the number of orange cards to that of red cards is 5 : 4. What is the ratio of the number of orange cards to that of brown cards?
Brown |
Orange |
Red |
Total |
1x3 |
3x3 |
4x3 |
|
5x1 |
4x1 |
|
3 u |
5 u |
4 u |
12 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 3 and 9 = 9
Orange : Brown
5 : 3
Answer(s): 5 : 3