Caden and Luke had 29 staplers together. Caden had 7 more staplers than Luke. Both of them sold some of their staplers. Luke sold 25% less staplers than what Caden sold. In the end, Luke had half as many staplers left as Caden. How many staplers had Caden left?
| |
Caden
(1) |
Luke
(2) |
Make p the same
(2)x2 = (3) |
Comparing Caden
and Luke at first |
7 more |
|
|
| Before |
18 |
11 |
22 |
| Change |
- 4 u |
- 3 u |
- 6 u |
| After |
2 p |
1 p |
2 p |
Number of staplers that Luke had at first
= (29 - 7) ÷ 2
= 22 ÷ 2
= 11
Number of staplers that Caden had at first
= 11 + 7
= 18
Number of staplers that Luke sold in percent
= 100% - 25%
= 75%
75% =
75100 =
34 Make p the same.
(1) = (3)
18 - 4 u = 22 - 6 u
6 u - 4 u = 22 - 18
2 u = 4
1 u = 4 ÷ 2 = 2
Number of staplers that Caden had left
= 18 - 4 u
= 18 - 4 x 2
= 18 - 8
= 10
Answer(s): 10
