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 2 : 3. What is the ratio of the number of green erasers to that of brown erasers?
Brown |
Green |
Red |
Total |
1x5 |
8x5 |
9x5 |
|
2x8 |
3x8 |
|
5 u |
16 u |
24 u |
45 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 5 = 40
Green : Brown
16 : 5
Answer(s): 16 : 5