PSLE A bag contains erasers of three different colours.
18 of the erasers are brown. The ratio of the number of yellow erasers to that of blue erasers is 1 : 5. What is the ratio of the number of yellow erasers to that of brown erasers?
Brown |
Yellow |
Blue |
Total |
1x6 |
7x6 |
8x6 |
|
1x7 |
5x7 |
|
6 u |
7 u |
35 u |
48 u |
The total number of blue and yellow erasers is the combined repeated identity.
Make the total number blue and yellow erasers the same.
LCM of 7 and 6 = 42
Yellow : Brown
7 : 6
Answer(s): 7 : 6