PSLE At first, Yoko had an equal number of blue and purple beads . She gave away
23 of her blue beads and some purple beads. In the end, she was left with
35 of her beads. What fraction of the purple beads did Yoko give away?
|
Blue |
Purple |
Total |
Comparing blue beads and purple beads at first |
1x3x5 = 15 u |
1x3x5 = 15 u |
2x3x5 = 30 u |
Before |
3x5 = 15 u |
15 u |
5x6 = 30 u |
Change |
- 2x5 = - 10 u |
- 2 u |
- 3x6 = - 12 u |
After |
1x5 = 5 u |
13 u |
2x6 = 18 u |
After
1x5 =
5 u13 u
2x6 =
18 uThe number of blue beads at first is repeated. Make the number of blue 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 5 is 30.
Number of purple beads that Yoko was left with
= 18 u - 5 u
= 13 u
Number of purple beads that Yoko gave away
= 15 u - 13 u
= 2 u
Fraction of the purple beads that Yoko gave away =
215 Answer(s):
215