Tommy and Bryan had 63 staplers together. Bryan had 5 less staplers than Tommy. Both of them sold some of their staplers. Bryan sold 25% more staplers than what Tommy sold. In the end, Bryan had half as many staplers left as Tommy. How many staplers had Bryan left?
| |
Tommy
(1) |
Bryan
(2) |
Make p the same
(2)x2 = (3) |
Comparing Tommy
and Bryan at first |
5 more |
|
|
| Before |
34 |
29 |
58 |
| Change |
- 4 u |
- 5 u |
- 10 u |
| After |
2 p |
1 p |
2 p |
Number of staplers that Bryan had at first
= (63 - 5) ÷ 2
= 58 ÷ 2
= 29
Number of staplers that Tommy had at first
= 29 + 5
= 34
Number of staplers that Bryan sold in percent
= 100% + 25%
= 125%
125% =
125100 =
54 Make p the same.
(1) = (3)
34 - 4 u = 58 - 10 u
10 u - 4 u = 58 - 34
6 u = 24
1 u = 24 ÷ 6 = 4
Number of staplers that Bryan had left
= 29 - 5 u
= 29 - 5 x 4
= 29 - 20
= 9
Answer(s): 9
