Risa and Joelle shared some stickers. Risa had 80% of what Joelle had at first. Risa then gave Joelle
78 of what she had. How many less percent did Risa have than Joelle in the end? Correct the answer to 1 decimal place.
| |
Risa |
Joelle |
Comparing Risa
and Joelle at first |
5x8 =
40 u |
4x8 =
32 u |
| Before |
8x5 =
40 u |
|
| Change |
- 7x5 =
- 35 u |
+ 7x5 =
+ 35 u |
| After |
1x5 =
5 u |
67 u |
80% =
80100 =
45The number of stickers that Risa had at first is repeated. Make the number of stickers that Risa had at first the same. LCM of 5 and 8 is 40.
Number of stickers that Joelle had in the end
= 32 u + 35 u
= 67 u
Number of less stickers that Risa had than Joelle in the end
= 67 u - 5 u
= 62 u
Number of less stickers that Risa had than Joelle in the end in percent
=
6267 x 100%
≈ 92.5%
Answer(s): 92.5%
