PSLE At first, Abi had an equal number of green and purple stickers . She gave away
45 of her green stickers and some purple stickers. In the end, she was left with
14 of her stickers. What fraction of the purple stickers did Abi give away?
|
Green |
Purple |
Total |
Comparing green stickers and purple stickers at first |
1x5x2 = 10 u |
1x5x2 = 10 u |
2x5x2 = 20 u |
Before |
5x2 = 10 u |
10 u |
4x5 = 20 u |
Change |
- 4x2 = - 8 u |
- 7 u |
- 1x5 = - 15 u |
After |
1x2 = 2 u |
3 u |
3x5 = 5 u |
After
1x2 =
2 u3 u
3x5 =
5 uThe number of green stickers at first is repeated. Make the number of green 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 4 is 20.
Number of purple stickers that Abi was left with
= 5 u - 2 u
= 3 u
Number of purple stickers that Abi gave away
= 10 u - 3 u
= 7 u
Fraction of the purple stickers that Abi gave away =
710 Answer(s):
710