PSLE At first, Fanny had an equal number of blue and yellow beads . She gave away
34 of her blue beads and some yellow beads. In the end, she was left with
14 of her beads. What fraction of the yellow beads did Fanny give away?
|
Blue |
Yellow |
Total |
Comparing blue beads and yellow beads at first |
1x4x1 = 4 u |
1x4x1 = 4 u |
2x4x1 = 8 u |
Before |
4x1 = 4 u |
4 u |
4x2 = 8 u |
Change |
- 3x1 = - 3 u |
- 3 u |
- 1x2 = - 6 u |
After |
1x1 = 1 u |
1 u |
3x2 = 2 u |
After
1x1 =
1 u1 u
3x2 =
2 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 4 is 8.
Number of yellow beads that Fanny was left with
= 2 u - 1 u
= 1 u
Number of yellow beads that Fanny gave away
= 4 u - 1 u
= 3 u
Fraction of the yellow beads that Fanny gave away =
34 Answer(s):
34