PSLE At first, Roshel had an equal number of gold and pink beads . She gave away
45 of her gold beads and some pink beads. In the end, she was left with
14 of her beads. What fraction of the pink beads did Roshel give away?
|
Gold |
Pink |
Total |
Comparing gold beads and pink beads at first |
1x5x2 = 10 u |
1x5x2 = 10 u |
2x5x2 = 20 u |
Before |
5x2 = 10 u |
10 u |
4x5 = 20 u |
Change |
- 4x2 = - 8 u |
- 7 u |
- 1x5 = - 15 u |
After |
1x2 = 2 u |
3 u |
3x5 = 5 u |
After
1x2 =
2 u3 u
3x5 =
5 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 4 is 20.
Number of pink beads that Roshel was left with
= 5 u - 2 u
= 3 u
Number of pink beads that Roshel gave away
= 10 u - 3 u
= 7 u
Fraction of the pink beads that Roshel gave away =
710 Answer(s):
710