PSLE Oliver kept his green and gold cards in two boxes. The ratio of the number of green to gold cards in the first box was 2 : 3 and it was 1 : 9 in the second box. The two boxes contained the same number of cards. What fraction of Oliver's cards were green cards?
First box |
Second box |
1x10 10 u |
1x10 10 u |
5x2 |
10x1 |
Green |
Gold |
Green |
Gold |
2x2 |
3x2 |
1x1 |
9x1 |
4 u |
6 u |
1 u |
9 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 5 and 10 is 10.
Total number of green cards
= 4 u + 1 u
= 5 u
Total number of cards
= 10 u + 10 u
= 20 u
Fraction of Oliver's cards that were green cards
=
520 =
14 Answer(s):
14