PSLE A bag contains coins of three different colours.
18 of the coins are yellow. The ratio of the number of orange coins to that of brown coins is 2 : 1. What is the ratio of the number of orange coins to that of yellow coins?
Yellow |
Orange |
Brown |
Total |
1x3 |
7x3 |
8x3 |
|
2x7 |
1x7 |
|
3 u |
14 u |
7 u |
24 u |
The total number of brown and orange coins is the combined repeated identity.
Make the total number brown and orange coins the same.
LCM of 7 and 3 = 21
Orange : Yellow
14 : 3
Answer(s): 14 : 3