PSLE At first, Gabby had an equal number of yellow and red beads . She gave away
34 of her yellow beads and some red beads. In the end, she was left with
35 of her beads. What fraction of the red beads was Gabby left with?
|
Yellow |
Red |
Total |
Comparing yellow beads and red 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 |
- 1 u |
- 3x8 = - 16 u |
After |
1x5 = 5 u |
19 u |
2x8 = 24 u |
The number of yellow beads at first is repeated. Make the number of yellow 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 red beads that Gabby was left with
= 24 u - 5 u
= 19 u
Fraction of the red beads that Gabby was left with =
1920 Answer(s):
1920