Cathy and Xandra shared some cards. Cathy had 30% of what Xandra had at first. Cathy then gave Xandra
25 of what she had. How many more percent did Xandra have than Cathy in the end? Correct the answer to 1 decimal place.
| |
Cathy |
Xandra |
Comparing Cathy
and Xandra at first |
10x1 =
10 u |
3x1 =
3 u |
| Before |
5x2 =
10 u |
|
| Change |
- 2x2 =
- 4 u |
+ 2x2 =
+ 4 u |
| After |
3x2 =
6 u |
7 u |
30% =
30100 =
310The number of cards that Cathy had at first is repeated. Make the number of cards that Cathy had at first the same. LCM of 10 and 5 is 10.
Number of cards that Xandra had in the end
= 3 u + 4 u
= 7 u
Number of more cards that Xandra had than Cathy in the end
= 7 u - 6 u
= 1 u
Number of more cards that Xandra had than Cathy in the end in percent
=
16 x 100%
≈ 16.7%
Answer(s): 16.7%
