PSLE A bag contains cards of three different colours.
19 of the cards are brown. The ratio of the number of red cards to that of yellow cards is 3 : 2. What is the ratio of the number of brown cards to that of yellow cards?
Brown |
Red |
Yellow |
Total |
1x5 |
8x5 |
9x5 |
|
3x8 |
2x8 |
|
5 u |
24 u |
16 u |
45 u |
The total number of yellow and red cards is the combined repeated identity.
Make the total number yellow and red cards the same.
LCM of 8 and 5 = 40
Brown : Yellow
5 : 16
Answer(s): 5 : 16