PSLE At first, Gabby had an equal number of pink and red beads . She gave away
34 of her pink beads and some red beads. In the end, she was left with
14 of her beads. What fraction of the red beads did Gabby give away?
|
Pink |
Red |
Total |
Comparing pink beads and red beads at first |
1x4x1 = 4 u |
1x4x1 = 4 u |
2x4x1 = 8 u |
Before |
4x1 = 4 u |
4 u |
4x2 = 8 u |
Change |
- 3x1 = - 3 u |
- 3 u |
- 1x2 = - 6 u |
After |
1x1 = 1 u |
1 u |
3x2 = 2 u |
After
1x1 =
1 u1 u
3x2 =
2 uThe number of pink beads at first is repeated. Make the number of pink 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 4 is 8.
Number of red beads that Gabby was left with
= 2 u - 1 u
= 1 u
Number of red beads that Gabby gave away
= 4 u - 1 u
= 3 u
Fraction of the red beads that Gabby gave away =
34 Answer(s):
34