PSLE At first, Hazel had an equal number of gold and black stickers . She gave away
25 of her gold stickers and some black stickers. In the end, she was left with
35 of her stickers. What fraction of the black stickers did Hazel give away?
|
Gold |
Black |
Total |
Comparing gold stickers and black stickers 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 |
After
3x1 =
3 u3 u
2x2 =
6 uThe number of gold stickers at first is repeated. Make the number of gold 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 5 is 10.
Number of black stickers that Hazel was left with
= 6 u - 3 u
= 3 u
Number of black stickers that Hazel gave away
= 5 u - 3 u
= 2 u
Fraction of the black stickers that Hazel gave away =
25 Answer(s):
25