PSLE At first, Zoe had an equal number of silver and black beads . She gave away
23 of her silver beads and some black beads. In the end, she was left with
14 of her beads. What fraction of the black beads was Zoe left with?
|
Silver |
Black |
Total |
Comparing silver beads and black beads at first |
1x3x2 = 6 u |
1x3x2 = 6 u |
2x3x2 = 12 u |
Before |
3x2 = 6 u |
6 u |
4x3 = 12 u |
Change |
- 2x2 = - 4 u |
- 5 u |
- 1x3 = - 9 u |
After |
1x2 = 2 u |
1 u |
3x3 = 3 u |
The number of silver beads at first is repeated. Make the number of silver beads the first the same. LCM of 3 and 1 is 3.
The total number of beads at first is repeated. Make the total number of beads at first the same. LCM of 6 and 4 is 12.
Number of black beads that Zoe was left with
= 3 u - 2 u
= 1 u
Fraction of the black beads that Zoe was left with =
16 Answer(s):
16