PSLE A bag contains marbles of three different colours.
17 of the marbles are brown. The ratio of the number of red marbles to that of orange marbles is 4 : 1. What is the ratio of the number of brown marbles to that of orange marbles?
Brown |
Red |
Orange |
Total |
1x5 |
6x5 |
7x5 |
|
4x6 |
1x6 |
|
5 u |
24 u |
6 u |
35 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 5 = 30
Brown : Orange
5 : 6
Answer(s): 5 : 6