PSLE A bag contains coins of three different colours.
15 of the coins are orange. The ratio of the number of brown coins to that of yellow coins is 7 : 1. What is the ratio of the number of brown coins to that of orange coins?
Orange |
Brown |
Yellow |
Total |
1x2 |
4x2 |
5x2 |
|
7x1 |
1x1 |
|
2 u |
7 u |
1 u |
10 u |
The total number of yellow and brown coins is the combined repeated identity.
Make the total number yellow and brown coins the same.
LCM of 4 and 8 = 8
Brown : Orange
7 : 2
Answer(s): 7 : 2