PSLE At first, Tina had an equal number of red and gold beads . She gave away
23 of her red beads and some gold beads. In the end, she was left with
25 of her beads. What fraction of the gold beads was Tina left with?
|
Red |
Gold |
Total |
Comparing red beads and gold beads at first |
1x3x5 = 15 u |
1x3x5 = 15 u |
2x3x5 = 30 u |
Before |
3x5 = 15 u |
15 u |
5x6 = 30 u |
Change |
- 2x5 = - 10 u |
- 8 u |
- 2x6 = - 18 u |
After |
1x5 = 5 u |
7 u |
3x6 = 12 u |
The number of red beads at first is repeated. Make the number of red beads the first the same. LCM of 3 and 1 is 3.
The total number of beads at first is repeated. Make the total number of beads at first the same. LCM of 6 and 5 is 30.
Number of gold beads that Tina was left with
= 12 u - 5 u
= 7 u
Fraction of the gold beads that Tina was left with =
715 Answer(s):
715