PSLE At first, Joelle had an equal number of silver and gold beads . She gave away
35 of her silver beads and some gold beads. In the end, she was left with
23 of her beads. What fraction of the gold beads did Joelle give away?
|
Silver |
Gold |
Total |
Comparing silver beads and gold beads at first |
1x5x3 = 15 u |
1x5x3 = 15 u |
2x5x3 = 30 u |
Before |
5x3 = 15 u |
15 u |
3x10 = 30 u |
Change |
- 3x3 = - 9 u |
- 1 u |
- 2x10 = - 10 u |
After |
2x3 = 6 u |
14 u |
1x10 = 20 u |
After
2x3 =
6 u14 u
1x10 =
20 uThe number of silver beads at first is repeated. Make the number of silver beads the first the same. LCM of 5 and 1 is 5.
The total number of beads at first is repeated. Make the total number of beads at first the same. LCM of 10 and 3 is 30.
Number of gold beads that Joelle was left with
= 20 u - 6 u
= 14 u
Number of gold beads that Joelle gave away
= 15 u - 14 u
= 1 u
Fraction of the gold beads that Joelle gave away =
115 Answer(s):
115