PSLE A bag contains marbles of three different colours.
12 of the marbles are brown. The ratio of the number of yellow marbles to that of red marbles is 1 : 8. What is the ratio of the number of yellow marbles to that of brown marbles?
Brown |
Yellow |
Red |
Total |
1x9 |
1x9 |
2x9 |
|
1x1 |
8x1 |
|
9 u |
1 u |
8 u |
18 u |
The total number of red and yellow marbles is the combined repeated identity.
Make the total number red and yellow marbles the same.
LCM of 1 and 9 = 9
Yellow : Brown
1 : 9
Answer(s): 1 : 9