Caden and Archie had 69 staplers together. Archie had 3 less staplers than Caden. Both of them sold some of their staplers. Archie sold 25% more staplers than what Caden sold. In the end, Archie had half as many staplers left as Caden. How many staplers had Archie left?
| |
Caden
(1) |
Archie
(2) |
Make p the same
(2)x2 = (3) |
Comparing Caden
and Archie at first |
3 more |
|
|
| Before |
36 |
33 |
66 |
| Change |
- 4 u |
- 5 u |
- 10 u |
| After |
2 p |
1 p |
2 p |
Number of staplers that Archie had at first
= (69 - 3) ÷ 2
= 66 ÷ 2
= 33
Number of staplers that Caden had at first
= 33 + 3
= 36
Number of staplers that Archie sold in percent
= 100% + 25%
= 125%
125% =
125100 =
54 Make p the same.
(1) = (3)
36 - 4 u = 66 - 10 u
10 u - 4 u = 66 - 36
6 u = 30
1 u = 30 ÷ 6 = 5
Number of staplers that Archie had left
= 33 - 5 u
= 33 - 5 x 5
= 33 - 25
= 8
Answer(s): 8
