Kathy and Penelope shared some coins. Kathy had 20% of what Penelope had at first. Kathy then gave Penelope
47 of what she had. How many less percent did Kathy have than Penelope in the end? Correct the answer to 1 decimal place.
| |
Kathy |
Penelope |
Comparing Kathy
and Penelope at first |
5x7 =
35 u |
1x7 =
7 u |
| Before |
7x5 =
35 u |
|
| Change |
- 4x5 =
- 20 u |
+ 4x5 =
+ 20 u |
| After |
3x5 =
15 u |
27 u |
20% =
20100 =
15The number of coins that Kathy had at first is repeated. Make the number of coins that Kathy had at first the same. LCM of 5 and 7 is 35.
Number of coins that Penelope had in the end
= 7 u + 20 u
= 27 u
Number of less coins that Kathy had than Penelope in the end
= 27 u - 15 u
= 12 u
Number of less coins that Kathy had than Penelope in the end in percent
=
1227 x 100%
≈ 44.4%
Answer(s): 44.4%
