PSLE At first, Diana had an equal number of orange and purple stickers . She gave away
25 of her orange stickers and some purple stickers. In the end, she was left with
23 of her stickers. What fraction of the purple stickers did Diana give away?
|
Orange |
Purple |
Total |
Comparing orange stickers and purple stickers at first |
1x5x3 = 15 u |
1x5x3 = 15 u |
2x5x3 = 30 u |
Before |
5x3 = 15 u |
15 u |
3x10 = 30 u |
Change |
- 2x3 = - 6 u |
- 4 u |
- 2x10 = - 10 u |
After |
3x3 = 9 u |
11 u |
1x10 = 20 u |
After
3x3 =
9 u11 u
1x10 =
20 uThe number of orange stickers at first is repeated. Make the number of orange stickers the first the same. LCM of 5 and 1 is 5.
The total number of stickers at first is repeated. Make the total number of stickers at first the same. LCM of 10 and 3 is 30.
Number of purple stickers that Diana was left with
= 20 u - 9 u
= 11 u
Number of purple stickers that Diana gave away
= 15 u - 11 u
= 4 u
Fraction of the purple stickers that Diana gave away =
415 Answer(s):
415