Sarah and Emma shared some stamps. Sarah had 70% of what Emma had at first. Sarah then gave Emma
47 of what she had. How many more percent did Emma have than Sarah in the end? Correct the answer to 1 decimal place.
|
Sarah |
Emma |
Comparing Sarah and Emma at first |
10x7 = 70 u |
7x7 = 49 u |
Before |
7x10 = 70 u |
|
Change |
- 4x10 = - 40 u |
+ 4x10 = + 40 u |
After |
3x10 = 30 u |
89 u |
70% =
70100 =
710The number of stamps that Sarah had at first is repeated. Make the number of stamps that Sarah had at first the same. LCM of 10 and 7 is 70.
Number of stamps that Emma had in the end
= 49 u + 40 u
= 89 u
Number of more stamps that Emma had than Sarah in the end
= 89 u - 30 u
= 59 u
Number of more stamps that Emma had than Sarah in the end in percent
=
5930 x 100%
≈ 196.7%
Answer(s): 196.7%