PSLE A bag contains erasers of three different colours.
19 of the erasers are brown. The ratio of the number of green erasers to that of red erasers is 3 : 1. What is the ratio of the number of green erasers to that of brown erasers?
Brown |
Green |
Red |
Total |
1x1 |
8x1 |
9x1 |
|
3x2 |
1x2 |
|
1 u |
6 u |
2 u |
9 u |
The total number of red and green erasers is the combined repeated identity.
Make the total number red and green erasers the same.
LCM of 8 and 4 = 8
Green : Brown
6 : 1
Answer(s): 6 : 1