PSLE A bag contains coins of three different colours.
19 of the coins are orange. The ratio of the number of purple coins to that of red coins is 2 : 3. What is the ratio of the number of orange coins to that of red coins?
Orange |
Purple |
Red |
Total |
1x5 |
8x5 |
9x5 |
|
2x8 |
3x8 |
|
5 u |
16 u |
24 u |
45 u |
The total number of red and purple coins is the combined repeated identity.
Make the total number red and purple coins the same.
LCM of 8 and 5 = 40
Orange : Red
5 : 24
Answer(s): 5 : 24