PSLE At first, Emily had an equal number of yellow and purple marbles . She gave away
34 of her yellow marbles and some purple marbles. In the end, she was left with
35 of her marbles. What fraction of the purple marbles was Emily left with?
|
Yellow |
Purple |
Total |
Comparing yellow marbles and purple 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 |
The number of yellow marbles at first is repeated. Make the number of yellow 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 purple marbles that Emily was left with
= 24 u - 5 u
= 19 u
Fraction of the purple marbles that Emily was left with =
1920 Answer(s):
1920