PSLE At first, Gem had an equal number of black and red stickers . She gave away
23 of her black stickers and some red stickers. In the end, she was left with
14 of her stickers. What fraction of the red stickers did Gem give away?
|
Black |
Red |
Total |
Comparing black stickers and red 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 black stickers at first is repeated. Make the number of black 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 red stickers that Gem was left with
= 3 u - 2 u
= 1 u
Number of red stickers that Gem gave away
= 6 u - 1 u
= 5 u
Fraction of the red stickers that Gem gave away =
56 Answer(s):
56