PSLE At first, Min had an equal number of gold and black stickers . She gave away
23 of her gold stickers and some black stickers. In the end, she was left with
14 of her stickers. What fraction of the black stickers did Min give away?
|
Gold |
Black |
Total |
Comparing gold stickers and black stickers at first |
1x3x2 = 6 u |
1x3x2 = 6 u |
2x3x2 = 12 u |
Before |
3x2 = 6 u |
6 u |
4x3 = 12 u |
Change |
- 2x2 = - 4 u |
- 5 u |
- 1x3 = - 9 u |
After |
1x2 = 2 u |
1 u |
3x3 = 3 u |
After
1x2 =
2 u1 u
3x3 =
3 uThe number of gold stickers at first is repeated. Make the number of gold stickers the first the same. LCM of 3 and 1 is 3.
The total number of stickers at first is repeated. Make the total number of stickers at first the same. LCM of 6 and 4 is 12.
Number of black stickers that Min was left with
= 3 u - 2 u
= 1 u
Number of black stickers that Min gave away
= 6 u - 1 u
= 5 u
Fraction of the black stickers that Min gave away =
56 Answer(s):
56