PSLE A bag contains coins of three different colours.
12 of the coins are brown. The ratio of the number of orange coins to that of purple coins is 1 : 2. What is the ratio of the number of orange coins to that of brown coins?
Brown |
Orange |
Purple |
Total |
1x3 |
1x3 |
2x3 |
|
1x1 |
2x1 |
|
3 u |
1 u |
2 u |
6 u |
The total number of purple and orange coins is the combined repeated identity.
Make the total number purple and orange coins the same.
LCM of 1 and 3 = 3
Orange : Brown
1 : 3
Answer(s): 1 : 3