PSLE A bag contains beads of three different colours.
12 of the beads are blue. The ratio of the number of purple beads to that of brown beads is 3 : 2. What is the ratio of the number of blue beads to that of brown beads?
Blue |
Purple |
Brown |
Total |
1x5 |
1x5 |
2x5 |
|
3x1 |
2x1 |
|
5 u |
3 u |
2 u |
10 u |
The total number of brown and purple beads is the combined repeated identity.
Make the total number brown and purple beads the same.
LCM of 1 and 5 = 5
Blue : Brown
5 : 2
Answer(s): 5 : 2