PSLE A bag contains beads of three different colours.
12 of the beads are orange. The ratio of the number of red beads to that of purple beads is 1 : 4. What is the ratio of the number of red beads to that of orange beads?
Orange |
Red |
Purple |
Total |
1x5 |
1x5 |
2x5 |
|
1x1 |
4x1 |
|
5 u |
1 u |
4 u |
10 u |
The total number of purple and red beads is the combined repeated identity.
Make the total number purple and red beads the same.
LCM of 1 and 5 = 5
Red : Orange
1 : 5
Answer(s): 1 : 5