PSLE A bag contains cards of three different colours.
14 of the cards are blue. The ratio of the number of brown cards to that of orange cards is 1 : 7. What is the ratio of the number of blue cards to that of orange cards?
Blue |
Brown |
Orange |
Total |
1x8 |
3x8 |
4x8 |
|
1x3 |
7x3 |
|
8 u |
3 u |
21 u |
32 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 3 and 8 = 24
Blue : Orange
8 : 21
Answer(s): 8 : 21