Gem and Risa shared some marbles. Gem had 25% of what Risa had at first. Gem then gave Risa
57 of what she had. How many less percent did Gem have than Risa in the end? Correct the answer to 1 decimal place.
| |
Gem |
Risa |
Comparing Gem
and Risa at first |
4x7 =
28 u |
1x7 =
7 u |
| Before |
7x4 =
28 u |
|
| Change |
- 5x4 =
- 20 u |
+ 5x4 =
+ 20 u |
| After |
2x4 =
8 u |
27 u |
25% =
25100 =
14The number of marbles that Gem had at first is repeated. Make the number of marbles that Gem had at first the same. LCM of 4 and 7 is 28.
Number of marbles that Risa had in the end
= 7 u + 20 u
= 27 u
Number of less marbles that Gem had than Risa in the end
= 27 u - 8 u
= 19 u
Number of less marbles that Gem had than Risa in the end in percent
=
1927 x 100%
≈ 70.4%
Answer(s): 70.4%
