PSLE A bag contains cards of three different colours.
12 of the cards are yellow. The ratio of the number of purple cards to that of blue cards is 4 : 1. What is the ratio of the number of yellow cards to that of blue cards?
Yellow |
Purple |
Blue |
Total |
1x5 |
1x5 |
2x5 |
|
4x1 |
1x1 |
|
5 u |
4 u |
1 u |
10 u |
The total number of blue and purple cards is the combined repeated identity.
Make the total number blue and purple cards the same.
LCM of 1 and 5 = 5
Yellow : Blue
5 : 1
Answer(s): 5 : 1