PSLE A bag contains beads of three different colours.
15 of the beads are red. The ratio of the number of green beads to that of purple beads is 1 : 6. What is the ratio of the number of green beads to that of red beads?
Red |
Green |
Purple |
Total |
1x7 |
4x7 |
5x7 |
|
1x4 |
6x4 |
|
7 u |
4 u |
24 u |
35 u |
The total number of purple and green beads is the combined repeated identity.
Make the total number purple and green beads the same.
LCM of 4 and 7 = 28
Green : Red
4 : 7
Answer(s): 4 : 7