PSLE A bag contains stickers of three different colours.
17 of the stickers are purple. The ratio of the number of brown stickers to that of blue stickers is 3 : 7. What is the ratio of the number of brown stickers to that of purple stickers?
Purple |
Brown |
Blue |
Total |
1x5 |
6x5 |
7x5 |
|
3x3 |
7x3 |
|
5 u |
9 u |
21 u |
35 u |
The total number of blue and brown stickers is the combined repeated identity.
Make the total number blue and brown stickers the same.
LCM of 6 and 10 = 30
Brown : Purple
9 : 5
Answer(s): 9 : 5