PSLE At first, Vanessa had an equal number of blue and gold marbles . She gave away
45 of her blue marbles and some gold marbles. In the end, she was left with
14 of her marbles. What fraction of the gold marbles was Vanessa left with?
|
Blue |
Gold |
Total |
Comparing blue 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 |
- 4x2 = - 8 u |
- 7 u |
- 1x5 = - 15 u |
After |
1x2 = 2 u |
3 u |
3x5 = 5 u |
The number of blue marbles at first is repeated. Make the number of blue 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 Vanessa was left with
= 5 u - 2 u
= 3 u
Fraction of the gold marbles that Vanessa was left with =
310 Answer(s):
310