PSLE A bag contains marbles of three different colours.
15 of the marbles are yellow. The ratio of the number of red marbles to that of orange marbles is 4 : 1. What is the ratio of the number of yellow marbles to that of orange marbles?
Yellow |
Red |
Orange |
Total |
1x5 |
4x5 |
5x5 |
|
4x4 |
1x4 |
|
5 u |
16 u |
4 u |
25 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 4 and 5 = 20
Yellow : Orange
5 : 4
Answer(s): 5 : 4