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