PSLE A bag contains marbles of three different colours.
12 of the marbles are green. The ratio of the number of orange marbles to that of brown marbles is 1 : 1. What is the ratio of the number of orange marbles to that of green marbles?
Green |
Orange |
Brown |
Total |
1x2 |
1x2 |
2x2 |
|
1x1 |
1x1 |
|
2 u |
1 u |
1 u |
4 u |
The total number of brown and orange marbles is the combined repeated identity.
Make the total number brown and orange marbles the same.
LCM of 1 and 2 = 2
Orange : Green
1 : 2
Answer(s): 1 : 2