PSLE A bag contains marbles of three different colours.
13 of the marbles are green. The ratio of the number of purple marbles to that of brown marbles is 1 : 4. What is the ratio of the number of green marbles to that of brown marbles?
Green |
Purple |
Brown |
Total |
1x5 |
2x5 |
3x5 |
|
1x2 |
4x2 |
|
5 u |
2 u |
8 u |
15 u |
The total number of brown and purple marbles is the combined repeated identity.
Make the total number brown and purple marbles the same.
LCM of 2 and 5 = 10
Green : Brown
5 : 8
Answer(s): 5 : 8