PSLE At first, Fanny had an equal number of silver and green marbles . She gave away
34 of her silver marbles and some green marbles. In the end, she was left with
14 of her marbles. What fraction of the green marbles did Fanny give away?
|
Silver |
Green |
Total |
Comparing silver marbles and green marbles at first |
1x4x1 = 4 u |
1x4x1 = 4 u |
2x4x1 = 8 u |
Before |
4x1 = 4 u |
4 u |
4x2 = 8 u |
Change |
- 3x1 = - 3 u |
- 3 u |
- 1x2 = - 6 u |
After |
1x1 = 1 u |
1 u |
3x2 = 2 u |
After
1x1 =
1 u1 u
3x2 =
2 uThe number of silver marbles at first is repeated. Make the number of silver marbles the first the same. LCM of 4 and 1 is 4.
The total number of marbles at first is repeated. Make the total number of marbles at first the same. LCM of 8 and 4 is 8.
Number of green marbles that Fanny was left with
= 2 u - 1 u
= 1 u
Number of green marbles that Fanny gave away
= 4 u - 1 u
= 3 u
Fraction of the green marbles that Fanny gave away =
34 Answer(s):
34