PSLE A bag contains marbles of three different colours.
16 of the marbles are green. The ratio of the number of yellow marbles to that of red marbles is 7 : 3. What is the ratio of the number of green marbles to that of red marbles?
Green |
Yellow |
Red |
Total |
1x2 |
5x2 |
6x2 |
|
7x1 |
3x1 |
|
2 u |
7 u |
3 u |
12 u |
The total number of red and yellow marbles is the combined repeated identity.
Make the total number red and yellow marbles the same.
LCM of 5 and 10 = 10
Green : Red
2 : 3
Answer(s): 2 : 3