Emma and Gabby shared some erasers. Emma had 70% of what Gabby had at first. Emma then gave Gabby
37 of what she had. How many less percent did Emma have than Gabby in the end? Correct the answer to 1 decimal place.
| |
Emma |
Gabby |
Comparing Emma
and Gabby at first |
10x7 =
70 u |
7x7 =
49 u |
| Before |
7x10 =
70 u |
|
| Change |
- 3x10 =
- 30 u |
+ 3x10 =
+ 30 u |
| After |
4x10 =
40 u |
79 u |
70% =
70100 =
710The number of erasers that Emma had at first is repeated. Make the number of erasers that Emma had at first the same. LCM of 10 and 7 is 70.
Number of erasers that Gabby had in the end
= 49 u + 30 u
= 79 u
Number of less erasers that Emma had than Gabby in the end
= 79 u - 40 u
= 39 u
Number of less erasers that Emma had than Gabby in the end in percent
=
3979 x 100%
≈ 49.4%
Answer(s): 49.4%
