PSLE A bag contains erasers of three different colours.
16 of the erasers are blue. The ratio of the number of purple erasers to that of brown erasers is 5 : 1. What is the ratio of the number of blue erasers to that of brown erasers?
Blue |
Purple |
Brown |
Total |
1x6 |
5x6 |
6x6 |
|
5x5 |
1x5 |
|
6 u |
25 u |
5 u |
36 u |
The total number of brown and purple erasers is the combined repeated identity.
Make the total number brown and purple erasers the same.
LCM of 5 and 6 = 30
Blue : Brown
6 : 5
Answer(s): 6 : 5