PSLE A bag contains cards of three different colours.
16 of the cards are brown. The ratio of the number of purple cards to that of red cards is 7 : 1. What is the ratio of the number of brown cards to that of red cards?
Brown |
Purple |
Red |
Total |
1x8 |
5x8 |
6x8 |
|
7x5 |
1x5 |
|
8 u |
35 u |
5 u |
48 u |
The total number of red and purple cards is the combined repeated identity.
Make the total number red and purple cards the same.
LCM of 5 and 8 = 40
Brown : Red
8 : 5
Answer(s): 8 : 5