PSLE A bag contains coins of three different colours.
110 of the coins are orange. The ratio of the number of purple coins to that of yellow coins is 2 : 3. What is the ratio of the number of orange coins to that of yellow coins?
Orange |
Purple |
Yellow |
Total |
1x5 |
9x5 |
10x5 |
|
2x9 |
3x9 |
|
5 u |
18 u |
27 u |
50 u |
The total number of yellow and purple coins is the combined repeated identity.
Make the total number yellow and purple coins the same.
LCM of 9 and 5 = 45
Orange : Yellow
5 : 27
Answer(s): 5 : 27