PSLE A bag contains cards of three different colours.
15 of the cards are purple. The ratio of the number of brown cards to that of orange cards is 4 : 1. What is the ratio of the number of purple cards to that of orange cards?
Purple |
Brown |
Orange |
Total |
1x5 |
4x5 |
5x5 |
|
4x4 |
1x4 |
|
5 u |
16 u |
4 u |
25 u |
The total number of orange and brown cards is the combined repeated identity.
Make the total number orange and brown cards the same.
LCM of 4 and 5 = 20
Purple : Orange
5 : 4
Answer(s): 5 : 4