PSLE A bag contains marbles of three different colours.
17 of the marbles are yellow. The ratio of the number of red marbles to that of orange marbles is 4 : 3. What is the ratio of the number of yellow marbles to that of orange marbles?
Yellow |
Red |
Orange |
Total |
1x7 |
6x7 |
7x7 |
|
4x6 |
3x6 |
|
7 u |
24 u |
18 u |
49 u |
The total number of orange and red marbles is the combined repeated identity.
Make the total number orange and red marbles the same.
LCM of 6 and 7 = 42
Yellow : Orange
7 : 18
Answer(s): 7 : 18