PSLE Daniel kept his red and silver marbles in two boxes. The ratio of the number of red to silver marbles in the first box was 2 : 3 and it was 1 : 9 in the second box. The two boxes contained the same number of marbles. What fraction of Daniel's marbles were red marbles?
First box |
Second box |
1x10 10 u |
1x10 10 u |
5x2 |
10x1 |
Red |
Silver |
Red |
Silver |
2x2 |
3x2 |
1x1 |
9x1 |
4 u |
6 u |
1 u |
9 u |
The total number of marbles in the first box and the second box is the same. Make the total number of marbles in each box the same. LCM of 5 and 10 is 10.
Total number of red marbles
= 4 u + 1 u
= 5 u
Total number of marbles
= 10 u + 10 u
= 20 u
Fraction of Daniel's marbles that were red marbles
=
520 =
14 Answer(s):
14