PSLE At first, Emily had an equal number of orange and pink marbles . She gave away
35 of her orange marbles and some pink marbles. In the end, she was left with
14 of her marbles. What fraction of the pink marbles did Emily give away?
|
Orange |
Pink |
Total |
Comparing orange marbles and pink 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 orange marbles at first is repeated. Make the number of orange 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 pink marbles that Emily was left with
= 5 u - 4 u
= 1 u
Number of pink marbles that Emily gave away
= 10 u - 1 u
= 9 u
Fraction of the pink marbles that Emily gave away =
910 Answer(s):
910