PSLE A bag contains stickers of three different colours.
12 of the stickers are purple. The ratio of the number of yellow stickers to that of brown stickers is 2 : 5. What is the ratio of the number of purple stickers to that of brown stickers?
Purple |
Yellow |
Brown |
Total |
1x7 |
1x7 |
2x7 |
|
2x1 |
5x1 |
|
7 u |
2 u |
5 u |
14 u |
The total number of brown and yellow stickers is the combined repeated identity.
Make the total number brown and yellow stickers the same.
LCM of 1 and 7 = 7
Purple : Brown
7 : 5
Answer(s): 7 : 5