PSLE A bag contains marbles of three different colours.
13 of the marbles are yellow. The ratio of the number of green marbles to that of red marbles is 1 : 4. What is the ratio of the number of green marbles to that of yellow marbles?
Yellow |
Green |
Red |
Total |
1x5 |
2x5 |
3x5 |
|
1x2 |
4x2 |
|
5 u |
2 u |
8 u |
15 u |
The total number of red and green marbles is the combined repeated identity.
Make the total number red and green marbles the same.
LCM of 2 and 5 = 10
Green : Yellow
2 : 5
Answer(s): 2 : 5