PSLE A bag contains erasers of three different colours.
16 of the erasers are orange. The ratio of the number of green erasers to that of yellow erasers is 4 : 3. What is the ratio of the number of green erasers to that of orange erasers?
Orange |
Green |
Yellow |
Total |
1x7 |
5x7 |
6x7 |
|
4x5 |
3x5 |
|
7 u |
20 u |
15 u |
42 u |
The total number of yellow and green erasers is the combined repeated identity.
Make the total number yellow and green erasers the same.
LCM of 5 and 7 = 35
Green : Orange
20 : 7
Answer(s): 20 : 7