Wesley and Carl had 87 staplers together. Carl had 5 less staplers than Wesley. Both of them sold some of their staplers. Carl sold 10% more staplers than what Wesley sold. In the end, Carl had half as many staplers left as Wesley. How many staplers had Carl left?
| |
Wesley
(1) |
Carl
(2) |
Make p the same
(2)x2 = (3) |
Comparing Wesley
and Carl at first |
5 more |
|
|
| Before |
46 |
41 |
82 |
| Change |
- 10 u |
- 11 u |
- 22 u |
| After |
2 p |
1 p |
2 p |
Number of staplers that Carl had at first
= (87 - 5) ÷ 2
= 82 ÷ 2
= 41
Number of staplers that Wesley had at first
= 41 + 5
= 46
Number of staplers that Carl sold in percent
= 100% + 10%
= 110%
110% =
110100 =
1110 Make p the same.
(1) = (3)
46 - 10 u = 82 - 22 u
22 u - 10 u = 82 - 46
12 u = 36
1 u = 36 ÷ 12 = 3
Number of staplers that Carl had left
= 41 - 11 u
= 41 - 11 x 3
= 41 - 33
= 8
Answer(s): 8
