PSLE At first, Nora had an equal number of gold and green beads . She gave away
45 of her gold beads and some green beads. In the end, she was left with
25 of her beads. What fraction of the green beads did Nora give away?
|
Gold |
Green |
Total |
Comparing gold beads and green beads at first |
1x5x1 = 5 u |
1x5x1 = 5 u |
2x5x1 = 10 u |
Before |
5x1 = 5 u |
5 u |
5x2 = 10 u |
Change |
- 4x1 = - 4 u |
- 2 u |
- 2x2 = - 6 u |
After |
1x1 = 1 u |
3 u |
3x2 = 4 u |
After
1x1 =
1 u3 u
3x2 =
4 uThe number of gold beads at first is repeated. Make the number of gold 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 5 is 10.
Number of green beads that Nora was left with
= 4 u - 1 u
= 3 u
Number of green beads that Nora gave away
= 5 u - 3 u
= 2 u
Fraction of the green beads that Nora gave away =
25 Answer(s):
25