PSLE A bag contains coins of three different colours.
12 of the coins are brown. The ratio of the number of red coins to that of green coins is 1 : 4. What is the ratio of the number of red coins to that of brown coins?
Brown |
Red |
Green |
Total |
1x5 |
1x5 |
2x5 |
|
1x1 |
4x1 |
|
5 u |
1 u |
4 u |
10 u |
The total number of green and red coins is the combined repeated identity.
Make the total number green and red coins the same.
LCM of 1 and 5 = 5
Red : Brown
1 : 5
Answer(s): 1 : 5