PSLE A bag contains marbles of three different colours.
16 of the marbles are purple. The ratio of the number of red marbles to that of yellow marbles is 1 : 1. What is the ratio of the number of red marbles to that of purple marbles?
Purple |
Red |
Yellow |
Total |
1x2 |
5x2 |
6x2 |
|
1x5 |
1x5 |
|
2 u |
5 u |
5 u |
12 u |
The total number of yellow and red marbles is the combined repeated identity.
Make the total number yellow and red marbles the same.
LCM of 5 and 2 = 10
Red : Purple
5 : 2
Answer(s): 5 : 2