PSLE A bag contains coins of three different colours.
13 of the coins are red. The ratio of the number of brown coins to that of blue coins is 2 : 1. What is the ratio of the number of brown coins to that of red coins?
Red |
Brown |
Blue |
Total |
1x3 |
2x3 |
3x3 |
|
2x2 |
1x2 |
|
3 u |
4 u |
2 u |
9 u |
The total number of blue and brown coins is the combined repeated identity.
Make the total number blue and brown coins the same.
LCM of 2 and 3 = 6
Brown : Red
4 : 3
Answer(s): 4 : 3