PSLE At first, Fanny had an equal number of blue and gold beads . She gave away
34 of her blue beads and some gold beads. In the end, she was left with
25 of her beads. What fraction of the gold beads did Fanny give away?
|
Blue |
Gold |
Total |
Comparing blue beads and gold beads at first |
1x4x5 = 20 u |
1x4x5 = 20 u |
2x4x5 = 40 u |
Before |
4x5 = 20 u |
20 u |
5x8 = 40 u |
Change |
- 3x5 = - 15 u |
- 9 u |
- 2x8 = - 24 u |
After |
1x5 = 5 u |
11 u |
3x8 = 16 u |
After
1x5 =
5 u11 u
3x8 =
16 uThe number of blue beads at first is repeated. Make the number of blue beads the first the same. LCM of 4 and 1 is 4.
The total number of beads at first is repeated. Make the total number of beads at first the same. LCM of 8 and 5 is 40.
Number of gold beads that Fanny was left with
= 16 u - 5 u
= 11 u
Number of gold beads that Fanny gave away
= 20 u - 11 u
= 9 u
Fraction of the gold beads that Fanny gave away =
920 Answer(s):
920