PSLE At first, Risa had an equal number of blue and orange beads . She gave away
35 of her blue beads and some orange beads. In the end, she was left with
23 of her beads. What fraction of the orange beads was Risa left with?
|
Blue |
Orange |
Total |
Comparing blue beads and orange beads at first |
1x5x3 = 15 u |
1x5x3 = 15 u |
2x5x3 = 30 u |
Before |
5x3 = 15 u |
15 u |
3x10 = 30 u |
Change |
- 3x3 = - 9 u |
- 1 u |
- 2x10 = - 10 u |
After |
2x3 = 6 u |
14 u |
1x10 = 20 u |
The number of blue beads at first is repeated. Make the number of blue 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 3 is 30.
Number of orange beads that Risa was left with
= 20 u - 6 u
= 14 u
Fraction of the orange beads that Risa was left with =
1415 Answer(s):
1415