PSLE A bag contains cards of three different colours.
19 of the cards are purple. The ratio of the number of orange cards to that of brown cards is 1 : 1. What is the ratio of the number of purple cards to that of brown cards?
Purple |
Orange |
Brown |
Total |
1x1 |
8x1 |
9x1 |
|
1x4 |
1x4 |
|
1 u |
4 u |
4 u |
9 u |
The total number of brown and orange cards is the combined repeated identity.
Make the total number brown and orange cards the same.
LCM of 8 and 2 = 8
Purple : Brown
1 : 4
Answer(s): 1 : 4