Shiyun and Gem shared some pens. Shiyun had 10% of what Gem had at first. Shiyun then gave Gem
78 of what she had. How many less percent did Shiyun have than Gem in the end? Correct the answer to 1 decimal place.
| |
Shiyun |
Gem |
Comparing Shiyun
and Gem at first |
10x4 =
40 u |
1x4 =
4 u |
| Before |
8x5 =
40 u |
|
| Change |
- 7x5 =
- 35 u |
+ 7x5 =
+ 35 u |
| After |
1x5 =
5 u |
39 u |
10% =
10100 =
110The number of pens that Shiyun had at first is repeated. Make the number of pens that Shiyun had at first the same. LCM of 10 and 8 is 40.
Number of pens that Gem had in the end
= 4 u + 35 u
= 39 u
Number of less pens that Shiyun had than Gem in the end
= 39 u - 5 u
= 34 u
Number of less pens that Shiyun had than Gem in the end in percent
=
3439 x 100%
≈ 87.2%
Answer(s): 87.2%
