PSLE A bag contains cards of three different colours.
15 of the cards are blue. The ratio of the number of yellow cards to that of purple cards is 5 : 1. What is the ratio of the number of yellow cards to that of blue cards?
Blue |
Yellow |
Purple |
Total |
1x3 |
4x3 |
5x3 |
|
5x2 |
1x2 |
|
3 u |
10 u |
2 u |
15 u |
The total number of purple and yellow cards is the combined repeated identity.
Make the total number purple and yellow cards the same.
LCM of 4 and 6 = 12
Yellow : Blue
10 : 3
Answer(s): 10 : 3