PSLE A bag contains erasers of three different colours.
12 of the erasers are orange. The ratio of the number of green erasers to that of brown erasers is 1 : 3. What is the ratio of the number of green erasers to that of orange erasers?
Orange |
Green |
Brown |
Total |
1x4 |
1x4 |
2x4 |
|
1x1 |
3x1 |
|
4 u |
1 u |
3 u |
8 u |
The total number of brown and green erasers is the combined repeated identity.
Make the total number brown and green erasers the same.
LCM of 1 and 4 = 4
Green : Orange
1 : 4
Answer(s): 1 : 4