Warren and Jeremy had 83 staplers together. Warren had 17 more staplers than Jeremy. Both of them sold some of their staplers. Jeremy sold 30% less staplers than what Warren sold. In the end, Jeremy had half as many staplers left as Warren. How many staplers had Warren left?
| |
Warren
(1) |
Jeremy
(2) |
Make p the same
(2)x2 = (3) |
Comparing Warren
and Jeremy at first |
17 more |
|
|
| Before |
50 |
33 |
66 |
| Change |
- 10 u |
- 7 u |
- 14 u |
| After |
2 p |
1 p |
2 p |
Number of staplers that Jeremy had at first
= (83 - 17) ÷ 2
= 66 ÷ 2
= 33
Number of staplers that Warren had at first
= 33 + 17
= 50
Number of staplers that Jeremy sold in percent
= 100% - 30%
= 70%
70% =
70100 =
710 Make p the same.
(1) = (3)
50 - 10 u = 66 - 14 u
14 u - 10 u = 66 - 50
4 u = 16
1 u = 16 ÷ 4 = 4
Number of staplers that Warren had left
= 50 - 10 u
= 50 - 10 x 4
= 50 - 40
= 10
Answer(s): 10
