PSLE At first, Winnie had an equal number of purple and orange marbles . She gave away
25 of her purple marbles and some orange marbles. In the end, she was left with
35 of her marbles. What fraction of the orange marbles was Winnie left with?
|
Purple |
Orange |
Total |
Comparing purple marbles and orange marbles 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 purple marbles at first is repeated. Make the number of purple marbles the first the same. LCM of 5 and 1 is 5.
The total number of marbles at first is repeated. Make the total number of marbles at first the same. LCM of 10 and 5 is 10.
Number of orange marbles that Winnie was left with
= 6 u - 3 u
= 3 u
Fraction of the orange marbles that Winnie was left with =
35 Answer(s):
35