Sarah and Zara shared some pens. Sarah had 40% of what Zara had at first. Sarah then gave Zara
37 of what she had. How many less percent did Sarah have than Zara in the end? Correct the answer to 1 decimal place.
| |
Sarah |
Zara |
Comparing Sarah
and Zara at first |
5x7 =
35 u |
2x7 =
14 u |
| Before |
7x5 =
35 u |
|
| Change |
- 3x5 =
- 15 u |
+ 3x5 =
+ 15 u |
| After |
4x5 =
20 u |
29 u |
40% =
40100 =
25The number of pens that Sarah had at first is repeated. Make the number of pens that Sarah had at first the same. LCM of 5 and 7 is 35.
Number of pens that Zara had in the end
= 14 u + 15 u
= 29 u
Number of less pens that Sarah had than Zara in the end
= 29 u - 20 u
= 9 u
Number of less pens that Sarah had than Zara in the end in percent
=
929 x 100%
≈ 31%
Answer(s): 31%
