PSLE A bag contains erasers of three different colours.
17 of the erasers are purple. The ratio of the number of yellow erasers to that of green erasers is 1 : 8. What is the ratio of the number of yellow erasers to that of purple erasers?
Purple |
Yellow |
Green |
Total |
1x3 |
6x3 |
7x3 |
|
1x2 |
8x2 |
|
3 u |
2 u |
16 u |
21 u |
The total number of green and yellow erasers is the combined repeated identity.
Make the total number green and yellow erasers the same.
LCM of 6 and 9 = 18
Yellow : Purple
2 : 3
Answer(s): 2 : 3