PSLE A bag contains erasers of three different colours.
16 of the erasers are yellow. The ratio of the number of brown erasers to that of orange erasers is 1 : 2. What is the ratio of the number of yellow erasers to that of orange erasers?
Yellow |
Brown |
Orange |
Total |
1x3 |
5x3 |
6x3 |
|
1x5 |
2x5 |
|
3 u |
5 u |
10 u |
18 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 5 and 3 = 15
Yellow : Orange
3 : 10
Answer(s): 3 : 10