Kimberly and Tammy shared some stamps. Kimberly had 30% of what Tammy had at first. Kimberly then gave Tammy
37 of what she had. How many less percent did Kimberly have than Tammy in the end? Correct the answer to 1 decimal place.
| |
Kimberly |
Tammy |
Comparing Kimberly
and Tammy at first |
10x7 =
70 u |
3x7 =
21 u |
| Before |
7x10 =
70 u |
|
| Change |
- 3x10 =
- 30 u |
+ 3x10 =
+ 30 u |
| After |
4x10 =
40 u |
51 u |
30% =
30100 =
310The number of stamps that Kimberly had at first is repeated. Make the number of stamps that Kimberly had at first the same. LCM of 10 and 7 is 70.
Number of stamps that Tammy had in the end
= 21 u + 30 u
= 51 u
Number of less stamps that Kimberly had than Tammy in the end
= 51 u - 40 u
= 11 u
Number of less stamps that Kimberly had than Tammy in the end in percent
=
1151 x 100%
≈ 21.6%
Answer(s): 21.6%
