PSLE A bag contains erasers of three different colours.
12 of the erasers are purple. The ratio of the number of yellow erasers to that of orange erasers is 2 : 3. What is the ratio of the number of purple erasers to that of orange erasers?
Purple |
Yellow |
Orange |
Total |
1x5 |
1x5 |
2x5 |
|
2x1 |
3x1 |
|
5 u |
2 u |
3 u |
10 u |
The total number of orange and yellow erasers is the combined repeated identity.
Make the total number orange and yellow erasers the same.
LCM of 1 and 5 = 5
Purple : Orange
5 : 3
Answer(s): 5 : 3