PSLE A bag contains cards of three different colours.
15 of the cards are orange. The ratio of the number of yellow cards to that of red cards is 6 : 1. What is the ratio of the number of yellow cards to that of orange cards?
Orange |
Yellow |
Red |
Total |
1x7 |
4x7 |
5x7 |
|
6x4 |
1x4 |
|
7 u |
24 u |
4 u |
35 u |
The total number of red and yellow cards is the combined repeated identity.
Make the total number red and yellow cards the same.
LCM of 4 and 7 = 28
Yellow : Orange
24 : 7
Answer(s): 24 : 7