PSLE A bag contains stickers of three different colours.
14 of the stickers are green. The ratio of the number of red stickers to that of purple stickers is 2 : 5. What is the ratio of the number of green stickers to that of purple stickers?
Green |
Red |
Purple |
Total |
1x7 |
3x7 |
4x7 |
|
2x3 |
5x3 |
|
7 u |
6 u |
15 u |
28 u |
The total number of purple and red stickers is the combined repeated identity.
Make the total number purple and red stickers the same.
LCM of 3 and 7 = 21
Green : Purple
7 : 15
Answer(s): 7 : 15