PSLE A bag contains marbles of three different colours.
19 of the marbles are yellow. The ratio of the number of red marbles to that of orange marbles is 3 : 1. What is the ratio of the number of yellow marbles to that of orange marbles?
Yellow |
Red |
Orange |
Total |
1x1 |
8x1 |
9x1 |
|
3x2 |
1x2 |
|
1 u |
6 u |
2 u |
9 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 8 and 4 = 8
Yellow : Orange
1 : 2
Answer(s): 1 : 2