PSLE At first, Irene had an equal number of pink and silver beads . She gave away
25 of her pink beads and some silver beads. In the end, she was left with
35 of her beads. What fraction of the silver beads was Irene left with?
|
Pink |
Silver |
Total |
Comparing pink beads and silver beads at first |
1x5x1 = 5 u |
1x5x1 = 5 u |
2x5x1 = 10 u |
Before |
5x1 = 5 u |
5 u |
5x2 = 10 u |
Change |
- 2x1 = - 2 u |
- 2 u |
- 3x2 = - 4 u |
After |
3x1 = 3 u |
3 u |
2x2 = 6 u |
The number of pink beads at first is repeated. Make the number of pink 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 5 is 10.
Number of silver beads that Irene was left with
= 6 u - 3 u
= 3 u
Fraction of the silver beads that Irene was left with =
35 Answer(s):
35