PSLE At first, Olivia had an equal number of silver and pink beads . She gave away
34 of her silver beads and some pink beads. In the end, she was left with
25 of her beads. What fraction of the pink beads did Olivia give away?
|
Silver |
Pink |
Total |
Comparing silver beads and pink 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 silver beads at first is repeated. Make the number of silver 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 pink beads that Olivia was left with
= 16 u - 5 u
= 11 u
Number of pink beads that Olivia gave away
= 20 u - 11 u
= 9 u
Fraction of the pink beads that Olivia gave away =
920 Answer(s):
920