PSLE A bag contains erasers of three different colours.
13 of the erasers are green. The ratio of the number of brown erasers to that of orange erasers is 4 : 3. What is the ratio of the number of green erasers to that of orange erasers?
Green |
Brown |
Orange |
Total |
1x7 |
2x7 |
3x7 |
|
4x2 |
3x2 |
|
7 u |
8 u |
6 u |
21 u |
The total number of orange and brown erasers is the combined repeated identity.
Make the total number orange and brown erasers the same.
LCM of 2 and 7 = 14
Green : Orange
7 : 6
Answer(s): 7 : 6