Irene had 80% as many candy canes as Marion. Irene gave away 10% of her candy canes and Marion bought another 60 candy canes. As a result, Irene now has 60% as many candy canes as Marion. Find the number of candy canes that Irene had in the end.
| |
Irene |
Marion |
| Before |
4x3 |
5x3 |
| Change |
- 0.4x3 |
+ 60 |
| After |
3.6x3 |
5x3 + 60 |
Comparing Irene and
Marion in the end |
3x3.6 |
5x3.6 |
| |
Irene |
Marion |
| 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 candy canes that Irene had in the end is repeated.
Make the number of candy canes that Irene had in the end the same.
The number of candy canes that Marion 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 candy canes that Irene had in the end
= 10.8 u
= 10.8 x 20
= 216
Answer: 216
