PSLE A bag contains erasers of three different colours.
112 of the erasers are orange. The ratio of the number of purple erasers to that of blue erasers is 3 : 1. What is the ratio of the number of orange erasers to that of blue erasers?
Orange |
Purple |
Blue |
Total |
1x4 |
11x4 |
12x4 |
|
3x11 |
1x11 |
|
4 u |
33 u |
11 u |
48 u |
The total number of blue and purple erasers is the combined repeated identity.
Make the total number blue and purple erasers the same.
LCM of 11 and 4 = 44
Orange : Blue
4 : 11
Answer(s): 4 : 11