Yen had 80% as many jelly beans as Natalie. Yen gave away 10% of her jelly beans and Natalie bought another 30 jelly beans. As a result, Yen now has 60% as many jelly beans as Natalie. Find the number of jelly beans that Yen had in the end.
| |
Yen |
Natalie |
| Before |
4x3 |
5x3 |
| Change |
- 0.4x3 |
+ 30 |
| After |
3.6x3 |
5x3 + 30 |
Comparing Yen and
Natalie in the end |
3x3.6 |
5x3.6 |
| |
Yen |
Natalie |
| Before |
12 u |
15 u |
| Change |
- 1.2 u |
+ 30 |
After
|
10.8 u
|
15 u + 30 =
18 u |
80% =
80100 =
4510% x 4
=
10100 x 4
= 0.4
60% =
60100 =
35The number of jelly beans that Yen had in the end is repeated.
Make the number of jelly beans that Yen had in the end the same.
The number of jelly beans that Natalie had in the end is repeated.
15 u + 30 = 18 u
18 u - 15 u = 30
3 u = 30
1 u = 30 ÷ 3 = 10
Number of jelly beans that Yen had in the end
= 10.8 u
= 10.8 x 10
= 108
Answer: 108
