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 yellow erasers is 2 : 1. What is the ratio of the number of brown erasers to that of yellow erasers?
Brown |
Green |
Yellow |
Total |
1x3 |
8x3 |
9x3 |
|
2x8 |
1x8 |
|
3 u |
16 u |
8 u |
27 u |
The total number of yellow and green erasers is the combined repeated identity.
Make the total number yellow and green erasers the same.
LCM of 8 and 3 = 24
Brown : Yellow
3 : 8
Answer(s): 3 : 8