PSLE At first, Penelope had an equal number of green and purple marbles . She gave away
23 of her green marbles and some purple marbles. In the end, she was left with
14 of her marbles. What fraction of the purple marbles did Penelope give away?
|
Green |
Purple |
Total |
Comparing green marbles and purple marbles 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 green marbles at first is repeated. Make the number of green marbles the first the same. LCM of 3 and 1 is 3.
The total number of marbles at first is repeated. Make the total number of marbles at first the same. LCM of 6 and 4 is 12.
Number of purple marbles that Penelope was left with
= 3 u - 2 u
= 1 u
Number of purple marbles that Penelope gave away
= 6 u - 1 u
= 5 u
Fraction of the purple marbles that Penelope gave away =
56 Answer(s):
56