PSLE A bag contains cards of three different colours.
17 of the cards are orange. The ratio of the number of green cards to that of brown cards is 2 : 7. What is the ratio of the number of orange cards to that of brown cards?
Orange |
Green |
Brown |
Total |
1x3 |
6x3 |
7x3 |
|
2x2 |
7x2 |
|
3 u |
4 u |
14 u |
21 u |
The total number of brown and green cards is the combined repeated identity.
Make the total number brown and green cards the same.
LCM of 6 and 9 = 18
Orange : Brown
3 : 14
Answer(s): 3 : 14