PSLE A bag contains coins of three different colours.
19 of the coins are red. The ratio of the number of green coins to that of purple coins is 1 : 1. What is the ratio of the number of green coins to that of red coins?
Red |
Green |
Purple |
Total |
1x1 |
8x1 |
9x1 |
|
1x4 |
1x4 |
|
1 u |
4 u |
4 u |
9 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 8 and 2 = 8
Green : Red
4 : 1
Answer(s): 4 : 1