PSLE A bag contains coins of three different colours.
16 of the coins are brown. The ratio of the number of purple coins to that of orange coins is 3 : 1. What is the ratio of the number of purple coins to that of brown coins?
Brown |
Purple |
Orange |
Total |
1x4 |
5x4 |
6x4 |
|
3x5 |
1x5 |
|
4 u |
15 u |
5 u |
24 u |
The total number of orange and purple coins is the combined repeated identity.
Make the total number orange and purple coins the same.
LCM of 5 and 4 = 20
Purple : Brown
15 : 4
Answer(s): 15 : 4