PSLE Caden kept his brown and red cards in two boxes. The ratio of the number of brown to red cards in the first box was 1 : 8 and it was 1 : 2 in the second box. The two boxes contained the same number of cards. What fraction of Caden's cards were brown cards?
First box |
Second box |
1x9 9 u |
1x9 9 u |
9x1 |
3x3 |
Brown |
Red |
Brown |
Red |
1x1 |
8x1 |
1x3 |
2x3 |
1 u |
8 u |
3 u |
6 u |
The total number of cards in the first box and the second box is the same. Make the total number of cards in each box the same. LCM of 9 and 3 is 9.
Total number of brown cards
= 1 u + 3 u
= 4 u
Total number of cards
= 9 u + 9 u
= 18 u
Fraction of Caden's cards that were brown cards
=
418 =
29 Answer(s):
29