PSLE At first, Marion had an equal number of green and purple beads . She gave away
25 of her green beads and some purple beads. In the end, she was left with
23 of her beads. What fraction of the purple beads did Marion give away?
|
Green |
Purple |
Total |
Comparing green beads and purple beads at first |
1x5x3 = 15 u |
1x5x3 = 15 u |
2x5x3 = 30 u |
Before |
5x3 = 15 u |
15 u |
3x10 = 30 u |
Change |
- 2x3 = - 6 u |
- 4 u |
- 2x10 = - 10 u |
After |
3x3 = 9 u |
11 u |
1x10 = 20 u |
After
3x3 =
9 u11 u
1x10 =
20 uThe number of green beads at first is repeated. Make the number of green 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 purple beads that Marion was left with
= 20 u - 9 u
= 11 u
Number of purple beads that Marion gave away
= 15 u - 11 u
= 4 u
Fraction of the purple beads that Marion gave away =
415 Answer(s):
415