Ivory and Kathy shared some erasers. Ivory had 30% of what Kathy had at first. Ivory then gave Kathy
35 of what she had. How many less percent did Ivory have than Kathy in the end? Correct the answer to 1 decimal place.
| |
Ivory |
Kathy |
Comparing Ivory
and Kathy at first |
10x1 =
10 u |
3x1 =
3 u |
| Before |
5x2 =
10 u |
|
| Change |
- 3x2 =
- 6 u |
+ 3x2 =
+ 6 u |
| After |
2x2 =
4 u |
9 u |
30% =
30100 =
310The number of erasers that Ivory had at first is repeated. Make the number of erasers that Ivory had at first the same. LCM of 10 and 5 is 10.
Number of erasers that Kathy had in the end
= 3 u + 6 u
= 9 u
Number of less erasers that Ivory had than Kathy in the end
= 9 u - 4 u
= 5 u
Number of less erasers that Ivory had than Kathy in the end in percent
=
59 x 100%
≈ 55.6%
Answer(s): 55.6%
