Vanessa had 80% as many jelly beans as Eva. Vanessa gave away 10% of her jelly beans and Eva bought another 60 jelly beans. As a result, Vanessa now has 60% as many jelly beans as Eva. Find the number of jelly beans that Vanessa had in the end.
| |
Vanessa |
Eva |
| Before |
4x3 |
5x3 |
| Change |
- 0.4x3 |
+ 60 |
| After |
3.6x3 |
5x3 + 60 |
Comparing Vanessa and
Eva in the end |
3x3.6 |
5x3.6 |
| |
Vanessa |
Eva |
| Before |
12 u |
15 u |
| Change |
- 1.2 u |
+ 60 |
After
|
10.8 u
|
15 u + 60 =
18 u |
80% =
80100 =
4510% x 4
=
10100 x 4
= 0.4
60% =
60100 =
35The number of jelly beans that Vanessa had in the end is repeated.
Make the number of jelly beans that Vanessa had in the end the same.
The number of jelly beans that Eva had in the end is repeated.
15 u + 60 = 18 u
18 u - 15 u = 60
3 u = 60
1 u = 60 ÷ 3 = 20
Number of jelly beans that Vanessa had in the end
= 10.8 u
= 10.8 x 20
= 216
Answer: 216
