Zara had 80% as many candy canes as Julie. Zara gave away 10% of her candy canes and Julie bought another 15 candy canes. As a result, Zara now has 60% as many candy canes as Julie. Find the number of candy canes that Julie had at first.
| |
Zara |
Julie |
| Before |
4x3 |
5x3 |
| Change |
- 0.4x3 |
+ 15 |
| After |
3.6x3 |
5x3 + 15 |
Comparing Zara and
Julie in the end |
3x3.6 |
5x3.6 |
| |
Zara |
Julie |
| Before |
12 u |
15 u |
| Change |
- 1.2 u |
+ 15 |
After
|
10.8 u
|
15 u + 15 =
18 u |
80% =
80100 =
4510% x 4
=
10100 x 4
= 0.4
60% =
60100 =
35The number of candy canes that Zara had in the end is repeated.
Make the number of candy canes that Zara had in the end the same.
The number of candy canes that Julie had in the end is repeated.
15 u + 15 = 18 u
18 u - 15 u = 15
3 u = 15
1 u = 15 ÷ 3 = 5
Number of candy canes that Julie had at first
= 15 u
= 15 x 5
= 75
Answer: 75
