Sabrina and Gabby shared some marbles. Sabrina had 20% of what Gabby had at first. Sabrina then gave Gabby
37 of what she had. How many less percent did Sabrina have than Gabby in the end? Correct the answer to 1 decimal place.
| |
Sabrina |
Gabby |
Comparing Sabrina
and Gabby at first |
5x7 =
35 u |
1x7 =
7 u |
| Before |
7x5 =
35 u |
|
| Change |
- 3x5 =
- 15 u |
+ 3x5 =
+ 15 u |
| After |
4x5 =
20 u |
22 u |
20% =
20100 =
15The number of marbles that Sabrina had at first is repeated. Make the number of marbles that Sabrina had at first the same. LCM of 5 and 7 is 35.
Number of marbles that Gabby had in the end
= 7 u + 15 u
= 22 u
Number of less marbles that Sabrina had than Gabby in the end
= 22 u - 20 u
= 2 u
Number of less marbles that Sabrina had than Gabby in the end in percent
=
222 x 100%
≈ 9.1%
Answer(s): 9.1%
