PSLE A bag contains marbles of three different colours.
13 of the marbles are brown. The ratio of the number of red marbles to that of orange marbles is 2 : 3. What is the ratio of the number of brown marbles to that of orange marbles?
Brown |
Red |
Orange |
Total |
1x5 |
2x5 |
3x5 |
|
2x2 |
3x2 |
|
5 u |
4 u |
6 u |
15 u |
The total number of orange and red marbles is the combined repeated identity.
Make the total number orange and red marbles the same.
LCM of 2 and 5 = 10
Brown : Orange
5 : 6
Answer(s): 5 : 6