PSLE At first, Nicole had an equal number of green and orange marbles . She gave away
34 of her green marbles and some orange marbles. In the end, she was left with
35 of her marbles. What fraction of the orange marbles did Nicole give away?
|
Green |
Orange |
Total |
Comparing green marbles and orange marbles at first |
1x4x5 = 20 u |
1x4x5 = 20 u |
2x4x5 = 40 u |
Before |
4x5 = 20 u |
20 u |
5x8 = 40 u |
Change |
- 3x5 = - 15 u |
- 1 u |
- 3x8 = - 16 u |
After |
1x5 = 5 u |
19 u |
2x8 = 24 u |
After
1x5 =
5 u19 u
2x8 =
24 uThe number of green marbles at first is repeated. Make the number of green 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 5 is 40.
Number of orange marbles that Nicole was left with
= 24 u - 5 u
= 19 u
Number of orange marbles that Nicole gave away
= 20 u - 19 u
= 1 u
Fraction of the orange marbles that Nicole gave away =
120 Answer(s):
120