PSLE At first, Eva had an equal number of yellow and gold marbles . She gave away
35 of her yellow marbles and some gold marbles. In the end, she was left with
14 of her marbles. What fraction of the gold marbles did Eva give away?
|
Yellow |
Gold |
Total |
Comparing yellow marbles and gold marbles at first |
1x5x2 = 10 u |
1x5x2 = 10 u |
2x5x2 = 20 u |
Before |
5x2 = 10 u |
10 u |
4x5 = 20 u |
Change |
- 3x2 = - 6 u |
- 9 u |
- 1x5 = - 15 u |
After |
2x2 = 4 u |
1 u |
3x5 = 5 u |
After
2x2 =
4 u1 u
3x5 =
5 uThe number of yellow marbles at first is repeated. Make the number of yellow marbles the first the same. LCM of 5 and 1 is 5.
The total number of marbles at first is repeated. Make the total number of marbles at first the same. LCM of 10 and 4 is 20.
Number of gold marbles that Eva was left with
= 5 u - 4 u
= 1 u
Number of gold marbles that Eva gave away
= 10 u - 1 u
= 9 u
Fraction of the gold marbles that Eva gave away =
910 Answer(s):
910